diff --git a/src/app/components/ModificationsMenu.jsx b/src/app/components/ModificationsMenu.jsx
index d2de4f32..794dd644 100644
--- a/src/app/components/ModificationsMenu.jsx
+++ b/src/app/components/ModificationsMenu.jsx
@@ -111,16 +111,20 @@ export default class ModificationsMenu extends TranslatedComponent {
     const { m, ship } = this.props;
     const features = m.blueprint.features[m.blueprint.grade];
     for (const featureName in features) {
-      let value = features[featureName][0];
-      if (m.grp == 'sb') {
-        // Shield boosters are a special case.  Their boost is dependent on their base so we need to calculate the value here
-        value = ((1 + m.shieldboost)*(1 + value) - 1) / m.shieldboost - 1
-      }
+      if (Modifications.modifications[featureName].method == 'overwrite') {
+        ship.setModification(m, featureName, features[featureName][1]);
+      } else {
+        let value = features[featureName][0];
+        if (m.grp == 'sb' && featureName == 'shieldboost') {
+          // Shield boosters are a special case.  Their boost is dependent on their base so we need to calculate the value here
+          value = ((1 + m.shieldboost)*(1 + value) - 1) / m.shieldboost - 1
+        }
 
-      if (Modifications.modifications[featureName].type == 'percentage') {
-        ship.setModification(m, featureName, value * 10000);
-      } else if (Modifications.modifications[featureName].type == 'numeric') {
-        ship.setModification(m, featureName, value * 100);
+        if (Modifications.modifications[featureName].type == 'percentage') {
+          ship.setModification(m, featureName, value * 10000);
+        } else if (Modifications.modifications[featureName].type == 'numeric') {
+          ship.setModification(m, featureName, value * 100);
+        }
       }
     }
 
@@ -135,16 +139,20 @@ export default class ModificationsMenu extends TranslatedComponent {
     const { m, ship } = this.props;
     const features = m.blueprint.features[m.blueprint.grade];
     for (const featureName in features) {
-      let value = features[featureName][0] + (Math.random() * (features[featureName][1] - features[featureName][0]));
-      if (m.grp == 'sb') {
-        // Shield boosters are a special case.  Their boost is dependent on their base so we need to calculate the value here
-        value = ((1 + m.shieldboost)*(1 + value) - 1) / m.shieldboost - 1
-      }
+      if (Modifications.modifications[featureName].method == 'overwrite') {
+        ship.setModification(m, featureName, features[featureName][1]);
+      } else {
+        let value = features[featureName][0] + (Math.random() * (features[featureName][1] - features[featureName][0]));
+        if (m.grp == 'sb' && featureName == 'shieldboost') {
+          // Shield boosters are a special case.  Their boost is dependent on their base so we need to calculate the value here
+          value = ((1 + m.shieldboost)*(1 + value) - 1) / m.shieldboost - 1
+        }
 
-      if (Modifications.modifications[featureName].type == 'percentage') {
-        ship.setModification(m, featureName, value * 10000);
-      } else if (Modifications.modifications[featureName].type == 'numeric') {
-        ship.setModification(m, featureName, value * 100);
+        if (Modifications.modifications[featureName].type == 'percentage') {
+          ship.setModification(m, featureName, value * 10000);
+        } else if (Modifications.modifications[featureName].type == 'numeric') {
+          ship.setModification(m, featureName, value * 100);
+        }
       }
     }
 
@@ -159,16 +167,20 @@ export default class ModificationsMenu extends TranslatedComponent {
     const { m, ship } = this.props;
     const features = m.blueprint.features[m.blueprint.grade];
     for (const featureName in features) {
-      let value = features[featureName][1];
-      if (m.grp == 'sb') {
-        // Shield boosters are a special case.  Their boost is dependent on their base so we need to calculate the value here
-        value = ((1 + m.shieldboost)*(1 + value) - 1) / m.shieldboost - 1
-      }
+      if (Modifications.modifications[featureName].method == 'overwrite') {
+          ship.setModification(m, featureName, features[featureName][1]);
+      } else {
+        let value = features[featureName][1];
+        if (m.grp == 'sb' && featureName == 'shieldboost') {
+          // Shield boosters are a special case.  Their boost is dependent on their base so we need to calculate the value here
+          value = ((1 + m.shieldboost)*(1 + value) - 1) / m.shieldboost - 1
+        }
 
-      if (Modifications.modifications[featureName].type == 'percentage') {
-        ship.setModification(m, featureName, value * 10000);
-      } else if (Modifications.modifications[featureName].type == 'numeric') {
-        ship.setModification(m, featureName, value * 100);
+        if (Modifications.modifications[featureName].type == 'percentage') {
+          ship.setModification(m, featureName, value * 10000);
+        } else if (Modifications.modifications[featureName].type == 'numeric') {
+          ship.setModification(m, featureName, value * 100);
+        }
       }
     }
 
@@ -211,7 +223,7 @@ export default class ModificationsMenu extends TranslatedComponent {
       blueprintLabel = translate(m.blueprint.name) + ' ' + translate('grade') + ' ' + m.blueprint.grade;
       haveBlueprint = true;
     } else {
-      blueprintLabel = translate('select a blueprint');
+      blueprintLabel = translate('PHRASE_SELECT_BLUEPRINT');
     }
 
     return (
@@ -220,17 +232,17 @@ export default class ModificationsMenu extends TranslatedComponent {
           onClick={(e) => e.stopPropagation() }
           onContextMenu={stopCtxPropagation}
       >
-        <div className={ cn('section-menu', { selected: blueprintMenuOpened })} style={{ cursor: 'pointer' }} onClick={_toggleBlueprintsMenu}>{blueprintLabel}</div>
+        <div className={ cn('section-menu', { selected: true })} style={{ cursor: 'pointer' }} onClick={_toggleBlueprintsMenu}>{blueprintLabel}</div>
         { blueprintMenuOpened ? this.state.blueprints : '' }
         { haveBlueprint ?
-          <table style={{ width: '100%' }}>
+          <table style={{ width: '100%', backgroundColor: 'transparent' }}>
             <tbody>
               <tr>
-                <td> { translate('roll') } </td>
-                <td style={{ cursor: 'pointer' }} onClick={_rollWorst}> { translate('worst') } </td>
-                <td style={{ cursor: 'pointer' }} onClick={_rollRandom}> { translate('random') } </td>
-                <td style={{ cursor: 'pointer' }} onClick={_rollBest}> { translate('best') } </td>
-                <td style={{ cursor: 'pointer' }} onClick={_reset}> { translate('reset') } </td>
+                <td> { translate('roll') }: </td>
+                <td style={{ cursor: 'pointer' }} onClick={_rollWorst} onMouseOver={termtip.bind(null, 'PHRASE_BLUEPRINT_WORST')} onMouseOut={tooltip.bind(null, null)}> { translate('worst') } </td>
+                <td style={{ cursor: 'pointer' }} onClick={_rollRandom} onMouseOver={termtip.bind(null, 'PHRASE_BLUEPRINT_RANDOM')} onMouseOut={tooltip.bind(null, null)}> { translate('random') } </td>
+                <td style={{ cursor: 'pointer' }} onClick={_rollBest}onMouseOver={termtip.bind(null, 'PHRASE_BLUEPRINT_BEST')} onMouseOut={tooltip.bind(null, null)}> { translate('best') } </td>
+                <td style={{ cursor: 'pointer' }} onClick={_reset}onMouseOver={termtip.bind(null, 'PHRASE_BLUEPRINT_RESET')} onMouseOut={tooltip.bind(null, null)}> { translate('reset') } </td>
               </tr>
             </tbody>
           </table> : '' }
diff --git a/src/app/i18n/en.js b/src/app/i18n/en.js
index 091cb560..93fc57b7 100644
--- a/src/app/i18n/en.js
+++ b/src/app/i18n/en.js
@@ -29,6 +29,11 @@ export const terms = {
   PHRASE_UNLADEN: 'Ship mass excluding fuel and cargo',
   PHRASE_UPDATE_RDY: 'Update Available! Click to refresh',
   PHRASE_ENGAGEMENT_RANGE: 'The distance between your ship and its target',
+  PHRASE_SELECT_BLUEPRINT: 'Click to select a blueprint',
+  PHRASE_BLUEPRINT_WORST: 'Worst primary values for this blueprint',
+  PHRASE_BLUEPRINT_RANDOM: 'Random selection between worst and best primary values for this blueprint',
+  PHRASE_BLUEPRINT_BEST: 'Best primary values for this blueprint',
+  PHRASE_BLUEPRINT_RESET: 'Remove all modifications and blueprint',
 
   HELP_MODIFICATIONS_MENU: 'Click on a number to enter a new value, or drag along the bar for small changes',
 
@@ -102,6 +107,12 @@ export const terms = {
 
   rebuildsperbay: 'Rebuilds per bay',
 
+  // Blueprint rolls
+  worst: 'Worst',
+  random: 'Random',
+  best: 'Best',
+  reset: 'Reset',
+
   // Weapon, offence, defence and movement
   dpe: 'Damage per MJ of energy',
   dps: 'Damage per second',