diff --git a/src/app/components/ModificationsMenu.jsx b/src/app/components/ModificationsMenu.jsx
index e61c5b7c..c1ed558d 100644
--- a/src/app/components/ModificationsMenu.jsx
+++ b/src/app/components/ModificationsMenu.jsx
@@ -57,6 +57,7 @@ export default class ModificationsMenu extends TranslatedComponent {
     this.modValDidChange = false; // used to determine if component update was caused by change in modification value.
     this._handleModChange = this._handleModChange.bind(this);
 
+    // console.log(props.m.blueprint)
     this.state = {
       blueprintMenuOpened: !(props.m.blueprint && props.m.blueprint.name),
       specialMenuOpened: false
@@ -421,15 +422,31 @@ export default class ModificationsMenu extends TranslatedComponent {
     let haveBlueprint = false;
     let blueprintTt;
     let blueprintCv;
+    let bprintSearchName;
+
+    // If the fdname is Weapon_Overcharged, we need to check if it's an MC
+    if (m.blueprint && m.blueprint.fdname) {
+      // Set the bprintSearchName value to the fdname of the blueprint for this module
+      bprintSearchName = m.blueprint.fdname;
+      if (m.blueprint.fdname === 'Weapon_Overcharged') {
+        // If the module is a MultiCannon, we need to fix the blueprint search name, else it will find the Laser Weapon_Overcharged Blueprint and not the MC Weapon_Overcharged Blueprint
+        if (m.symbol.match(/MultiCannon/i)) {
+          // console.log(Modifications.modules[m.grp].blueprints['MC_Overcharged']);
+          // console.log(m.blueprint.fdname);
+          bprintSearchName = 'MC_Overcharged';
+        }
+      }
+    }
     // TODO: Fix this to actually find the correct blueprint.
-    if (!m.blueprint || !m.blueprint.name || !m.blueprint.fdname || !Modifications.modules[m.grp].blueprints || !Modifications.modules[m.grp].blueprints[m.blueprint.fdname]) {
+    if (!m.blueprint || !m.blueprint.name || !m.blueprint.fdname || !Modifications.modules[m.grp].blueprints || !Modifications.modules[m.grp].blueprints[bprintSearchName]) {
       this.props.ship.clearModuleBlueprint(m);
       this.props.ship.clearModuleSpecial(m);
     }
-    if (m.blueprint && m.blueprint.name && Modifications.modules[m.grp].blueprints[m.blueprint.fdname].grades[m.blueprint.grade]) {
+    if (m.blueprint && m.blueprint.name && Modifications.modules[m.grp].blueprints[bprintSearchName].grades[m.blueprint.grade]) {
       blueprintLabel = translate(m.blueprint.name) + ' ' + translate('grade') + ' ' + m.blueprint.grade;
       haveBlueprint = true;
-      blueprintTt  = blueprintTooltip(translate, m.blueprint.grades[m.blueprint.grade], Modifications.modules[m.grp].blueprints[m.blueprint.fdname].grades[m.blueprint.grade].engineers, m.grp);
+      // console.log(haveBlueprint);
+      blueprintTt  = blueprintTooltip(translate, m.blueprint.grades[m.blueprint.grade], Modifications.modules[m.grp].blueprints[bprintSearchName].grades[m.blueprint.grade].engineers, m.grp);
       blueprintCv = getPercent(m);
     }
 
diff --git a/src/app/components/PowerManagement.jsx b/src/app/components/PowerManagement.jsx
index ad574289..97402408 100644
--- a/src/app/components/PowerManagement.jsx
+++ b/src/app/components/PowerManagement.jsx
@@ -125,15 +125,32 @@ export default class PowerManagement extends TranslatedComponent {
           retractedElem = <td className='ptr disabled upp' colSpan='2' onClick={toggleEnabled}>{translate('disabled')}</td>;
         }
 
+        // If this is a Guardian Shield Reinforcement Package or Guardian Hull Reinforcement Package, or Guardian Module Reinforcement Package, it cannot change priority
+        console.log(slot);
+        let priorityField;
+        if (m.symbol) {
+          if (m.symbol.match(/GuardianShield/i) || m.symbol.match(/GuardianHull/i) || m.symbol.match(/GuardianModule/i)) {
+            priorityField = <td>1</td>;
+          } else {
+            priorityField = <td>
+            <span className='flip ptr btn' onClick={this._priority.bind(this, slot, -1)}>&#9658;</span>
+            {' ' + (slot.priority + 1) + ' '}
+            <span className='ptr btn' onClick={this._priority.bind(this, slot, 1)}>&#9658;</span>
+          </td>;
+          }
+        }
+        else {
+          priorityField = <td>
+          <span className='flip ptr btn' onClick={this._priority.bind(this, slot, -1)}>&#9658;</span>
+          {' ' + (slot.priority + 1) + ' '}
+          <span className='ptr btn' onClick={this._priority.bind(this, slot, 1)}>&#9658;</span>
+        </td>;
+        }
         powerRows.push(<tr key={i} className={cn('highlight', { disabled: !slot.enabled })}>
           <td className='ptr' style={{ width: '1em' }} onClick={toggleEnabled}>{m.class + m.rating}</td>
           <td className='ptr le shorten cap' onClick={toggleEnabled}>{slotName(translate, slot)}</td>
           <td className='ptr' onClick={toggleEnabled}><u>{translate(slot.type)}</u></td>
-          <td>
-            <span className='flip ptr btn' onClick={this._priority.bind(this, slot, -1)}>&#9658;</span>
-            {' ' + (slot.priority + 1) + ' '}
-            <span className='ptr btn' onClick={this._priority.bind(this, slot, 1)}>&#9658;</span>
-          </td>
+          {priorityField}
           <td className='ri ptr' style={{ width: '3.25em' }} onClick={toggleEnabled}>{pwr(m.getPowerUsage())}</td>
           <td className='ri ptr' style={{ width: '3em' }} onClick={toggleEnabled}><u>{pct(m.getPowerUsage() / ship.powerAvailable)}</u></td>
           {retractedElem}
diff --git a/src/app/components/StandardSlot.jsx b/src/app/components/StandardSlot.jsx
index 09819009..d098203a 100644
--- a/src/app/components/StandardSlot.jsx
+++ b/src/app/components/StandardSlot.jsx
@@ -133,10 +133,10 @@ export default class StandardSlot extends TranslatedComponent {
             <div className={'r'}>{formats.round(mass)}{units.T}</div>
 	    <div/>
             <div className={'cb'}>
-                { m.getMinMass() ? <div className='l'>{translate('minimum mass')}: {formats.int(m.getMinMass())}{units.T}</div> : null }
-                { m.getOptMass() ? <div className='l'>{translate('optimal mass')}: {formats.int(m.getOptMass())}{units.T}</div> : null }
-                { m.getMaxMass() ? <div className='l'>{translate('max mass')}: {formats.int(m.getMaxMass())}{units.T}</div> : null }
-                { m.getOptMul() ? <div className='l'>{translate('optimal multiplier')}: {formats.rPct(m.getOptMul())}</div> : null }
+                { m.getMinMass() ? <div className='l'>{translate('minmass')}: {formats.int(m.getMinMass())}{units.T}</div> : null }
+                { m.getOptMass() ? <div className='l'>{translate('optmass')}: {formats.int(m.getOptMass())}{units.T}</div> : null }
+                { m.getMaxMass() ? <div className='l'>{translate('maxmass')}: {formats.int(m.getMaxMass())}{units.T}</div> : null }
+                { m.getOptMul() ? <div className='l'>{translate('optmul')}: {formats.rPct(m.getOptMul())}</div> : null }
                 { m.getRange() ? <div className='l'>{translate('range', m.grp)}: {formats.f2(m.getRange())}{units.km}</div> : null }
                 { m.time ? <div className='l'>{translate('time')}: {formats.time(m.time)}</div> : null }
                 { m.getThermalEfficiency() ? <div className='l'>{translate('efficiency')}: {formats.f2(m.getThermalEfficiency())}</div> : null }
diff --git a/src/app/i18n/en.json b/src/app/i18n/en.json
index eba7f829..1290640c 100644
--- a/src/app/i18n/en.json
+++ b/src/app/i18n/en.json
@@ -276,8 +276,10 @@
     "thermres": "Thermal resistance",
     "wepcap": "Weapons capacity",
     "weprate": "Weapons recharge rate",
+    "minmass": "Minimum mass",
     "minmass_sg": "Minimum hull mass",
     "optmass_sg": "Optimal hull mass",
+    "maxmass": "Maximum mass",
     "maxmass_sg": "Maximum hull mass",
     "minmul_sg": "Minimum strength",
     "optmul_sg": "Optimal strength",
diff --git a/src/app/utils/BlueprintFunctions.js b/src/app/utils/BlueprintFunctions.js
index 3365c05c..03d62584 100644
--- a/src/app/utils/BlueprintFunctions.js
+++ b/src/app/utils/BlueprintFunctions.js
@@ -307,10 +307,22 @@ export function isChangeValueBeneficial(feature, value) {
  * @returns {Object}         The matching blueprint
  */
 export function getBlueprint(name, module) {
+  // Special case for multi-cannons. Conflicting 'Weapon_Overcharged' Blueprints exist due to FD's naming conventions. If this blueprint is for a multi-cannon, we need to use the correct blueprint.
+  if (name === 'weapon_overcharged') {
+    if (module.symbol.match(/MultiCannon/i)) {
+      name = 'mc_overcharged';
+    }
+  }
+  else if (name === 'Weapon_Overcharged') {
+    if (module.symbol.match(/MultiCannon/i)) {
+      name = 'MC_Overcharged';
+    }
+  }
   // Start with a copy of the blueprint
   const findMod = val => Object.keys(Modifications.blueprints).find(elem => elem.toString().toLowerCase().search(val.toString().toLowerCase().replace(/(OutfittingFieldType_|persecond)/igm, '')) >= 0);
   const found = Modifications.blueprints[findMod(name)];
   if (!found || !found.fdname) {
+    console.error('Blueprint not found:', name);
     return {};
   }
   const blueprint = JSON.parse(JSON.stringify(found));
diff --git a/src/app/utils/JournalUtils.js b/src/app/utils/JournalUtils.js
index 5b7cf0f5..c56a9c3f 100644
--- a/src/app/utils/JournalUtils.js
+++ b/src/app/utils/JournalUtils.js
@@ -117,7 +117,7 @@ export function shipFromLoadoutJSON(json) {
         let powerplant = _moduleFromFdName(module.Item);
         // Check the powerplant returned is valid
         if (!_isValidImportedModule(powerplant, 'powerplant'))
-        { 
+        {
           powerplant = _moduleFromFdName('Int_Missing_Powerplant');
           module.Engineering = null;
         }
@@ -130,7 +130,7 @@ export function shipFromLoadoutJSON(json) {
         let thrusters = _moduleFromFdName(module.Item);
         // Check the thrusters returned is valid
         if (!_isValidImportedModule(thrusters, 'thrusters'))
-        { 
+        {
           thrusters = _moduleFromFdName('Int_Missing_Engine');
           module.Engineering = null;
         }
@@ -143,7 +143,7 @@ export function shipFromLoadoutJSON(json) {
         let frameshiftdrive = _moduleFromFdName(module.Item);
         // Check the frameshiftdrive returned is valid
         if (!_isValidImportedModule(frameshiftdrive, 'frameshiftdrive'))
-        { 
+        {
           frameshiftdrive = _moduleFromFdName('Int_Missing_Hyperdrive');
           module.Engineering = null;
         }
@@ -156,7 +156,7 @@ export function shipFromLoadoutJSON(json) {
         let lifesupport = _moduleFromFdName(module.Item);
         // Check the lifesupport returned is valid
         if (!_isValidImportedModule(lifesupport, 'lifesupport'))
-        { 
+        {
           lifesupport = _moduleFromFdName('Int_Missing_LifeSupport');
           module.Engineering = null;
         }
@@ -169,8 +169,8 @@ export function shipFromLoadoutJSON(json) {
         let powerdistributor = _moduleFromFdName(module.Item);
         // Check the powerdistributor returned is valid
         if (!_isValidImportedModule(powerdistributor, 'powerdistributor'))
-        { 
-          powerdistributor = _moduleFromFdName('Int_Missing_PowerDistributor'); 
+        {
+          powerdistributor = _moduleFromFdName('Int_Missing_PowerDistributor');
           module.Engineering = null;
         }
         ship.use(ship.standard[4], powerdistributor, true);
@@ -182,7 +182,7 @@ export function shipFromLoadoutJSON(json) {
         let sensors = _moduleFromFdName(module.Item);
         // Check the sensors returned is valid
         if (!_isValidImportedModule(sensors, 'sensors'))
-        { 
+        {
           sensors = _moduleFromFdName('Int_Missing_Sensors');
           module.Engineering = null;
         }
@@ -195,7 +195,7 @@ export function shipFromLoadoutJSON(json) {
         let fueltank = _moduleFromFdName(module.Item);
         // Check the fueltank returned is valid
         if (!_isValidImportedModule(fueltank, 'fueltank'))
-        { 
+        {
           fueltank = _moduleFromFdName('Int_Missing_FuelTank');
         }
         ship.use(ship.standard[6], fueltank, true);
@@ -228,7 +228,7 @@ export function shipFromLoadoutJSON(json) {
         } else {
           hardpoint = _moduleFromFdName(hardpointSlot.Item);
           // Check the hardpoint module returned is valid
-          if (!_isValidImportedModule(hardpoint, 'hardpoint')){ 
+          if (!_isValidImportedModule(hardpoint, 'hardpoint')){
             // Check if it's a Utility or Hardpoint
             if (hardpointSlot.Slot.toLowerCase().search(/tiny/))
             {
@@ -293,12 +293,12 @@ export function shipFromLoadoutJSON(json) {
       let internal = _moduleFromFdName(internalJson.Item);
       // Check the internal module returned is valid
       if (!_isValidImportedModule(internal, 'internal'))
-      { 
+      {
         internal = _moduleFromFdName('Int_Missing_Module');
         ship.use(ship.internal[i], internal, true);
         ship.internal[i].enabled = internalJson.On === true;
         ship.internal[i].priority = internalJson.Priority;
-        //throw 'Unknown internal module: "' + module.Item + '"'; 
+        //throw 'Unknown internal module: "' + module.Item + '"';
       }
       else {
         ship.use(ship.internal[i], internal, true);
@@ -349,6 +349,7 @@ function _addModifications(module, modifiers, quality, blueprint, grade, special
   // Add the blueprint definition, grade and special
   if (blueprint) {
     module.blueprint = getBlueprint(blueprint, module);
+
     if (grade) {
       module.blueprint.grade = Number(grade);
     }