diff --git a/ChangeLog.md b/ChangeLog.md
index 0f7dda9b..ab1cf2b1 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,9 @@
+#2.3.3
+  * Remove unused blueprint when hitting reset
+  * Add 'purchase module' external link to EDDB for refit items
+  * Use coriolis-data 2.3.3:
+    * Add Felicity Farseer to list of engineers that supply sensor and detailed surface scanner modifications
+
 #2.3.2
   * Use scan range for DSS rather than scan time
   * Fix companion API import of Dolphin
diff --git a/package.json b/package.json
index f9851ca5..f2047f42 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "coriolis_shipyard",
-  "version": "2.3.2",
+  "version": "2.3.3",
   "repository": {
     "type": "git",
     "url": "https://github.com/EDCD/coriolis"
diff --git a/src/app/components/CostSection.jsx b/src/app/components/CostSection.jsx
index 302dd5c8..0da51961 100644
--- a/src/app/components/CostSection.jsx
+++ b/src/app/components/CostSection.jsx
@@ -6,6 +6,7 @@ import Ship from '../shipyard/Ship';
 import { Insurance } from '../shipyard/Constants';
 import { slotName, slotComparator } from '../utils/SlotFunctions';
 import TranslatedComponent from './TranslatedComponent';
+import { ShoppingIcon } from '../components/SvgIcons';
 
 /**
  * Cost Section
@@ -31,6 +32,7 @@ export default class CostSection extends TranslatedComponent {
     this._buildRetrofitShip = this._buildRetrofitShip.bind(this);
     this._onBaseRetrofitChange = this._onBaseRetrofitChange.bind(this);
     this._defaultRetrofitName = this._defaultRetrofitName.bind(this);
+    this._eddbShoppingList = this._eddbShoppingList.bind(this);
 
     let data = Ships[props.ship.id];   // Retrieve the basic ship properties, slots and defaults
     let retrofitName = this._defaultRetrofitName(props.ship.id, props.buildName);
@@ -325,12 +327,27 @@ export default class CostSection extends TranslatedComponent {
     </div>;
   }
 
+  /**
+   * Open up a window for EDDB with a shopping list of our retrofit components
+   */
+  _eddbShoppingList() {
+    const { retrofitCosts } = this.state;
+    const { ship } = this.props;
+
+    // Provide unique list of non-PP module EDDB IDs to buy
+    const modIds = retrofitCosts.filter(item => item.retroItem.incCost && item.buyId && !item.buyPp).map(item => item.buyId).filter((v, i, a) => a.indexOf(v) === i);
+
+    // Open up the relevant URL
+    window.open('https://eddb.io/station?m=' + modIds.join(','));
+  }
+
   /**
    * Render the retofit tab
    * @return {React.Component} Tab contents
    */
   _retrofitTab() {
     let { retrofitTotal, retrofitCosts, moduleDiscount, retrofitName } = this.state;
+    const { termtip, tooltip } = this.context;
     let { translate, formats, units } = this.context.language;
     let int = formats.int;
     let rows = [], options = [<option key='stock' value=''>{translate('Stock')}</option>];
@@ -370,7 +387,8 @@ export default class CostSection extends TranslatedComponent {
           <tbody>
             {rows}
             <tr className='ri'>
-              <td colSpan='4' className='lbl' >{translate('cost')}</td>
+              <td className='lbl' ><button onClick={this._eddbShoppingList} onMouseOver={termtip.bind(null, 'PHRASE_REFIT_SHOPPING_LIST')} onMouseOut={tooltip.bind(null, null)}><ShoppingIcon className='lg' style={{ fill: 'black' }}/></button></td>
+              <td colSpan='3' className='lbl' >{translate('cost')}</td>
               <td colSpan='2' className={cn('val', retrofitTotal > 0 ? 'warning' : 'secondary-disabled')} style={{ borderBottom:'none' }}>
                 {int(retrofitTotal)}{units.CR}
               </td>
@@ -403,6 +421,8 @@ export default class CostSection extends TranslatedComponent {
     if (ship.bulkheads.m.index != retrofitShip.bulkheads.m.index) {
       item = {
         buyClassRating: ship.bulkheads.m.class + ship.bulkheads.m.rating,
+        buyId: ship.bulkheads.m.eddbID,
+        buyPp: ship.bulkheads.m.pp,
         buyName: ship.bulkheads.m.name,
         sellClassRating: retrofitShip.bulkheads.m.class + retrofitShip.bulkheads.m.rating,
         sellName: retrofitShip.bulkheads.m.name,
@@ -424,6 +444,8 @@ export default class CostSection extends TranslatedComponent {
         if (modId != retroModId) {
           item = { netCost: 0, retroItem: retroSlotGroup[i] };
           if (slotGroup[i].m) {
+            item.buyId = slotGroup[i].m.eddbID,
+            item.buyPp = slotGroup[i].m.pp,
             item.buyName = slotGroup[i].m.name || slotGroup[i].m.grp;
             item.buyClassRating = slotGroup[i].m.class + slotGroup[i].m.rating;
             item.netCost = slotGroup[i].discountedCost;
diff --git a/src/app/components/ModificationsMenu.jsx b/src/app/components/ModificationsMenu.jsx
index 1e657e79..5e040613 100644
--- a/src/app/components/ModificationsMenu.jsx
+++ b/src/app/components/ModificationsMenu.jsx
@@ -130,10 +130,10 @@ export default class ModificationsMenu extends TranslatedComponent {
    */
   _blueprintSelected(fdname, grade) {
     this.context.tooltip(null);
-    const { m } = this.props;
+    const { m, ship } = this.props;
     const blueprint = getBlueprint(fdname, m);
     blueprint.grade = grade;
-    m.blueprint = blueprint;
+    ship.setModuleBlueprint(m, blueprint);
 
     this.setState({ blueprintMenuOpened: false });
     this.props.onChange();
@@ -155,15 +155,10 @@ export default class ModificationsMenu extends TranslatedComponent {
     this.context.tooltip(null);
     const { m, ship } = this.props;
 
-    if (m.blueprint) { 
-      if (special === null) {
-        m.blueprint.special = null;
-      } else {
-        m.blueprint.special = Modifications.specials[special];
-      }
-      ship.recalculateDps();
-      ship.recalculateHps();
-      ship.recalculateEps();
+    if (special === null) {
+      ship.clearModuelSpecial(m);
+    } else {
+      ship.setModuleSpecial(m, Modifications.specials[special]);
     }
 
     this.setState({ specialMenuOpened: false });
@@ -268,7 +263,7 @@ export default class ModificationsMenu extends TranslatedComponent {
   _reset() {
     const { m, ship } = this.props;
     ship.clearModifications(m);
-    ship.clearBlueprint(m);
+    ship.clearModuleBlueprint(m);
 
     this.props.onChange();
   }
@@ -294,7 +289,7 @@ export default class ModificationsMenu extends TranslatedComponent {
     let blueprintLabel;
     let haveBlueprint = false;
     let blueprintTt;
-    if (m.blueprint && !isEmpty(m.blueprint)) {
+    if (m.blueprint && m.blueprint.name) {
       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);
diff --git a/src/app/i18n/en.js b/src/app/i18n/en.js
index b154cae4..5ef042f3 100644
--- a/src/app/i18n/en.js
+++ b/src/app/i18n/en.js
@@ -38,6 +38,7 @@ export const terms = {
   PHRASE_SELECT_SPECIAL: 'Click to select an experimental effect',
   PHRASE_NO_SPECIAL: 'No experimental effect',
   PHRASE_SHOPPING_LIST: 'Stations that sell this build',
+  PHRASE_REFIT_SHOPPING_LIST: 'Stations that sell required modules',
   PHRASE_TOTAL_EFFECTIVE_SHIELD: 'Total amount of damage that can be taken from each damage type, if using all shield cells',
   PHRASE_TIME_TO_LOSE_SHIELDS: 'Shields will hold for',
   PHRASE_TIME_TO_RECOVER_SHIELDS: 'Shields will recover in',
diff --git a/src/app/shipyard/Ship.js b/src/app/shipyard/Ship.js
index 0de8b2ef..99dcd23d 100755
--- a/src/app/shipyard/Ship.js
+++ b/src/app/shipyard/Ship.js
@@ -429,11 +429,45 @@ export default class Ship {
   }
 
   /**
-   * Clear blueprint for a module
-   * @param  {Number} m      The module for which to clear the modifications
+   * Set blueprint for a module
+   * @param  {Object} m      The module for which to set the blueprint
+   * @param  {Object} bp     The blueprint
    */
-  clearBlueprint(m) {
+  setModuleBlueprint(m, bp) {
+    m.blueprint = bp;
+    this.updateModificationsString();
+  }
+
+  /**
+   * Clear blueprint for a module
+   * @param  {Object} m      The module for which to clear the blueprint
+   */
+  clearModuleBlueprint(m) {
     m.blueprint = {};
+    this.updateModificationsString();
+  }
+
+  /**
+   * Set special for a module
+   * @param  {Object} m       The module for which to set the blueprint
+   * @param  {Object} special The special
+   */
+  setModuleSpecial(m, special) {
+    if (m.blueprint) {
+      m.blueprint.special = special;
+    }
+    this.recalculateDps().recalculateHps().recalculateEps();
+  }
+
+  /**
+   * Clear special for a module
+   * @param  {Object} m      The module for which to clear the blueprint
+   */
+  clearModuleSpecial(m) {
+    if (m.blueprint) {
+      m.blueprint.special = null;
+    }
+    this.recalculateDps().recalculateHps().recalculateEps();
   }
 
   /**
@@ -1445,16 +1479,20 @@ export default class Ship {
 
     // Now work out the size of the binary buffer from our modifications array
     let bufsize = 0;
-    for (let slot of slots) {
-      if (slot.length > 0) {
-        // Length is 1 for the slot ID, 10 for the blueprint name and grade, 5 for each modification, and 1 for the end marker
-        bufsize = bufsize + 1 + 10 + (5 * slot.length) + 1;
-      }
-    }
-    for (let special of specials) {
-      if (special) {
-        // Length is 5 for each special
-        bufsize += 5;
+    for (let i = 0; i < slots.length; i++) {
+      if (slots[i].length > 0 || (blueprints[i] && blueprints[i].id)) {
+        // Length is 1 for the slot ID, 5 for each modification, and 1 for the end marker
+        bufsize = bufsize + 1 + (5 * slots[i].length) + 1;
+
+        if (blueprints[i] && blueprints[i].id) {
+          // Additional 10 for the blueprint and grade
+          bufsize += 10;
+        }
+
+        if (specials[i]) {
+          // Additional 5 for each special
+          bufsize += 5;
+        }
       }
     }
 
@@ -1465,7 +1503,7 @@ export default class Ship {
       let curpos = 0;
       let i = 0;
       for (let slot of slots) {
-        if (slot.length > 0) {
+        if (slot.length > 0 || (blueprints[i] && blueprints[i].id)) {
           buffer.writeInt8(i, curpos++);
           if (blueprints[i] && blueprints[i].id) {
             buffer.writeInt8(MODIFICATION_ID_BLUEPRINT, curpos++);