diff --git a/lang/en.json b/lang/en.json
index 674d8d8..5bbf312 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -90,6 +90,7 @@
     "DG.Roll.Damage": "Damage",
     "DG.Roll.RollingDamageFor": "Rolling DAMAGE for",
     "DG.Roll.Or": "Or",
+    "DG.Roll.Roll": "Roll",
 
     "DG.Physical.Wounds": "Wounds",
     "DG.Physical.FirstAidLabel": "First Aid Has Already Been Attempted: ",
diff --git a/lang/ja.json b/lang/ja.json
index 70631be..6d74a75 100644
--- a/lang/ja.json
+++ b/lang/ja.json
@@ -90,6 +90,7 @@
     "DG.Roll.Damage": "ダメージ",
     "DG.Roll.RollingDamageFor": "ダメージ・ロール：",
     "DG.Roll.Or": " / ",
+    "DG.Roll.Roll": "振る",
 
     "DG.Physical.Wounds": "傷",
     "DG.Physical.FirstAidLabel": "応急処置は既に施された",
diff --git a/module/actor/actor-sheet.js b/module/actor/actor-sheet.js
index df49aab..62b83b8 100644
--- a/module/actor/actor-sheet.js
+++ b/module/actor/actor-sheet.js
@@ -154,7 +154,8 @@ export class DeltaGreenActorSheet extends ActorSheet {
     });
 
     // Rollable abilities - bind to everything with the 'Rollable' class
-    html.find('.rollable').click(this._onRoll.bind(this));
+    //html.find('.rollable').click(this._onRoll.bind(this));
+    html.find('.rollable').mousedown(this._onRoll.bind(this));
     
     // Drag events for macros.
     if (this.actor.owner) {
@@ -218,7 +219,7 @@ export class DeltaGreenActorSheet extends ActorSheet {
     htmlContent += `</div>`;
 
     new Dialog({
-      content:htmlContent,
+      content: htmlContent,
       title: game.i18n.translations.DG.Skills.AddTypedOrCustomSkill,
       buttons: {
         add:{
@@ -298,6 +299,11 @@ export class DeltaGreenActorSheet extends ActorSheet {
     const element = event.currentTarget;
     const dataset = element.dataset;
 
+    if(event && event.which === 2){
+      // probably don't want rolls to trigger from a middle mouse click
+      return;
+    }
+
     if (dataset.roll) {
       let roll = new Roll(dataset.roll, this.actor.data.data);
       let key = dataset.label ? dataset.label : '';
@@ -305,23 +311,44 @@ export class DeltaGreenActorSheet extends ActorSheet {
       let label = dataset.label ? `${dataset.label}` : '';
       let targetVal = "";
       let rollType = dataset.rolltype ? dataset.rolltype : '';
+      
+      // if shift-click or right click, bring up roll editor dialog
+      let requestedModifyRoll = (event && event.shiftKey || event.which === 3); //(event && (event.shiftKey || event.altKey || event.ctrlKey || event.metaKey));
 
       // check the 'data-target="something" property to determine how to grab the target for the roll
       if(rollType === "skill" || rollType === "typeskill"){
         targetVal = dataset.target;
         label = game.i18n.localize(label).toUpperCase();
-        sendPercentileTestToChat(this.actor, label, targetVal);
+        
+        if(requestedModifyRoll){
+          this._showModifyPercentileTestDialogue(this.actor, label, targetVal);
+        }
+        else{
+          sendPercentileTestToChat(this.actor, label, targetVal);
+        }
       }
       else if(dataset.target === "statistic.x5"){
         let stat = this.actor.data.data.statistics[key];
         targetVal = stat.x5;
         label = game.i18n.localize("DG.Attributes." + key).toUpperCase();
-        sendPercentileTestToChat(this.actor, label, targetVal);
+
+        if(requestedModifyRoll){
+          this._showModifyPercentileTestDialogue(this.actor, label, targetVal);
+        }
+        else{
+          sendPercentileTestToChat(this.actor, label, targetVal);
+        }
       }
       else if(rollType === "sanity"){
         targetVal = this.actor.data.data.sanity.value;
         label = game.i18n.localize("DG.Attributes.SAN").toUpperCase();
-        sendPercentileTestToChat(this.actor, label, targetVal);
+
+        if(requestedModifyRoll){
+          this._showModifyPercentileTestDialogue(this.actor, label, targetVal);
+        }
+        else{
+          sendPercentileTestToChat(this.actor, label, targetVal);
+        }
       }
       else if(rollType === "damage"){
         // damage roll, not a skill check
@@ -336,6 +363,45 @@ export class DeltaGreenActorSheet extends ActorSheet {
     }
   }
 
+  async _showModifyPercentileTestDialogue(actor, label, originalTarget){
+    
+    let template = "systems/deltagreen/templates/dialog/modify-percentile-roll.html";
+    let backingData = {
+      data:{
+        label: label,
+        originalTarget: originalTarget,
+        targetModifier: 20
+      },
+    };
+    
+    let html = await renderTemplate(template, backingData);
+
+    new Dialog({
+      content: html,
+      title: "Modify Roll",
+      default: "roll",
+      buttons: {
+        roll:{
+          label: game.i18n.translations.DG.Roll.Roll,
+          callback: html => { 
+            let targetModifier = html.find("[name='targetModifier']").val();
+            
+            let newTarget = parseInt(originalTarget);
+
+            try{
+              newTarget += parseInt(targetModifier);
+            }
+            catch(ex){
+              console.log(ex);
+            }
+             
+            sendPercentileTestToChat(actor, label, newTarget);
+          }
+        }
+      }
+      }).render(true);
+  }
+
   _resetBreakingPoint(event){
     event.preventDefault();
     let currentBreakingPoint = 0;
diff --git a/module/deltagreen.js b/module/deltagreen.js
index f149ee4..aa8b92b 100644
--- a/module/deltagreen.js
+++ b/module/deltagreen.js
@@ -4,6 +4,8 @@ import { DeltaGreenActorSheet } from "./actor/actor-sheet.js";
 import { DeltaGreenItem } from "./item/item.js";
 import { DeltaGreenItemSheet } from "./item/item-sheet.js";
 
+import { preloadHandlebarsTemplates } from "./templates.js";
+
 Hooks.once('init', async function() {
 
   game.deltagreen = {
@@ -30,8 +32,11 @@ Hooks.once('init', async function() {
   Actors.registerSheet("deltagreen", DeltaGreenActorSheet, { makeDefault: true });
   Items.unregisterSheet("core", ItemSheet);
   Items.registerSheet("deltagreen", DeltaGreenItemSheet, { makeDefault: true });
+  
+  // Preload Handlebars Templates
+  preloadHandlebarsTemplates();
 
-  // Add Handlebars helpers, here are a few useful examples:
+  // Add Handlebars helpers
   Handlebars.registerHelper('concat', function() {
     var outStr = '';
     for (var arg in arguments) {
diff --git a/module/templates.js b/module/templates.js
new file mode 100644
index 0000000..8a0099e
--- /dev/null
+++ b/module/templates.js
@@ -0,0 +1,12 @@
+/**
+ * Define a set of template paths to pre-load
+ * Pre-loaded templates are compiled and cached for fast access when rendering
+ * NWE - I am not sure if there is actually much point to this
+ * @return {Promise}
+ */
+export const preloadHandlebarsTemplates = async function() {
+    return loadTemplates([
+      "systems/deltagreen/templates/actor/actor-sheet.html",
+      "systems/deltagreen/templates/dialog/modify-percentile-roll.html"
+    ]);
+  };
\ No newline at end of file
diff --git a/templates/dialog/modify-percentile-roll.html b/templates/dialog/modify-percentile-roll.html
new file mode 100644
index 0000000..c5d68ad
--- /dev/null
+++ b/templates/dialog/modify-percentile-roll.html
@@ -0,0 +1,11 @@
+<form>
+    <div>
+        <div>
+            <p>Skill: {{data.label}}</p>
+        </div>
+        <br>
+        <label>Original Target: {{data.originalTarget}}</label>
+        <label>Modify Target<label>
+        <input id="test" type="number" name="targetModifier" value="{{data.targetModifier}}" />
+    </div>
+</form>
\ No newline at end of file