diff --git a/modules/dark-stars-actor-sheet.js b/modules/dark-stars-actor-sheet.js
index e02bddd..0a971b2 100644
--- a/modules/dark-stars-actor-sheet.js
+++ b/modules/dark-stars-actor-sheet.js
@@ -93,17 +93,6 @@ export class DarkStarsActorSheet extends ActorSheet {
       this.actor.createEmbeddedDocuments('Item', [{ name: "NewItem", type: dataType }], { renderSheet: true })
     })
         
-    html.find('.equip-activate').click(ev => {
-      const li = $(ev.currentTarget).parents(".item")
-      let itemId = li.data("item-id")
-      this.actor.equipActivate( itemId)
-    });      
-    html.find('.equip-deactivate').click(ev => {
-      const li = $(ev.currentTarget).parents(".item")
-      let itemId = li.data("item-id")
-      this.actor.equipDeactivate( itemId)
-    });      
-
     html.find('.subactor-edit').click(ev => {
       const li = $(ev.currentTarget).parents(".item");
       let actorId = li.data("actor-id");
@@ -116,6 +105,12 @@ export class DarkStarsActorSheet extends ActorSheet {
       let actorId = li.data("actor-id");
       this.actor.delSubActor(actorId);
     });
+
+    html.find('.skill-used-id').change(event => {
+      const li = $(event.currentTarget).parents(".item");
+      this.actor.setSkillUsed( li.data("item-id"), event.currentTarget.checked );
+    } );
+
     html.find('.quantity-minus').click(event => {
       const li = $(event.currentTarget).parents(".item");
       this.actor.incDecQuantity( li.data("item-id"), -1 );
@@ -134,10 +129,6 @@ export class DarkStarsActorSheet extends ActorSheet {
       this.actor.incDecAmmo( li.data("item-id"), +1 )
     } );
             
-    html.find('.roll-ability').click((event) => {
-      const abilityKey = $(event.currentTarget).data("ability-key");
-      this.actor.rollAbility(abilityKey);
-    });
     html.find('.roll-skill').click((event) => {
       const li = $(event.currentTarget).parents(".item")
       const skillId = li.data("item-id")
@@ -149,20 +140,6 @@ export class DarkStarsActorSheet extends ActorSheet {
       const skillId = li.data("item-id")
       this.actor.rollWeapon(skillId)
     });
-    html.find('.roll-armor-die').click((event) => {
-      this.actor.rollArmorDie()
-    });
-    html.find('.roll-shield-die').click((event) => {
-      this.actor.rollShieldDie()
-    });
-    html.find('.roll-target-die').click((event) => {
-      this.actor.rollDefenseRanged()
-    });
-    
-    html.find('.roll-save').click((event) => {
-      const saveKey = $(event.currentTarget).data("save-key")
-      this.actor.rollSave(saveKey)
-    });
     
     
     html.find('.lock-unlock-sheet').click((event) => {
diff --git a/modules/dark-stars-actor.js b/modules/dark-stars-actor.js
index f5b7019..d344b86 100644
--- a/modules/dark-stars-actor.js
+++ b/modules/dark-stars-actor.js
@@ -98,7 +98,6 @@ export class DarkStarsActor extends Actor {
       this.computeDerivated()
       this.buildContainerTree()
       this.computeHitPoints()
-      this.computeEffortPoints()
     }
 
     super.prepareDerivedData();
@@ -179,10 +178,18 @@ export class DarkStarsActor extends Actor {
     return item;
   }
 
+  /* -------------------------------------------- */
+  setSkillUsed( skillId, checked) {
+    let skill = this.items.get(skillId)
+    if(skill) {
+      this.updateEmbeddedDocuments('Item', [ {_id: skill.id, 'system.used': checked} ])
+    }
+  }
+
   /* -------------------------------------------- */
   updateSkill(skill) {
     skill.derivated = duplicate(this.system.derivated[skill.system.base])
-    skill.total = skill.derivated.value + skill.system.bonus    
+    skill.total = skill.system.value + skill.derivated.value + skill.system.bonus    
   }
 
   /* -------------------------------------------- */
diff --git a/system.json b/system.json
index f4119e0..bcc3a59 100644
--- a/system.json
+++ b/system.json
@@ -100,7 +100,7 @@
   "styles": [
     "styles/simple.css"
   ],
-  "version": "10.0.12",
+  "version": "10.0.13",
   "compatibility": {
     "minimum": "10",
     "verified": "10",
@@ -108,7 +108,7 @@
   },
   "title": "Dark Stars RPG",
   "manifest": "https://www.uberwald.me/gitea/uberwald/fvtt-dark-stars/raw/branch/main/system.json",
-  "download": "https://www.uberwald.me/gitea/uberwald/fvtt-dark-stars/archive/fvtt-dark-stars-v10.0.12.zip",
+  "download": "https://www.uberwald.me/gitea/uberwald/fvtt-dark-stars/archive/fvtt-dark-stars-v10.0.13.zip",
   "url": "https://www.uberwald.me/gitea/uberwald/",
   "background": "images/ui/dark_stars_welcome_page.webp",
   "id": "fvtt-dark-stars"
diff --git a/template.json b/template.json
index f237fd5..7880997 100644
--- a/template.json
+++ b/template.json
@@ -277,6 +277,7 @@
     ],
     "skill": {
       "base": "",
+      "value": 0,
       "bonus": 0,
       "used": false,
       "description": ""
diff --git a/templates/actors/actor-sheet.hbs b/templates/actors/actor-sheet.hbs
index 9c1152a..69d1566 100644
--- a/templates/actors/actor-sheet.hbs
+++ b/templates/actors/actor-sheet.hbs
@@ -74,6 +74,9 @@
           <span class="item-name-label-header-long2">
             <h3><label class="items-title-text">Skills</label></h3>
           </span>
+          <span class="item-field-label-medium">
+            <label class="short-label">Base</label>
+          </span>
           <span class="item-field-label-long">
             <label class="short-label">Derivated</label>
           </span>
@@ -83,6 +86,9 @@
           <span class="item-field-label-medium">
             <label class="short-label">Total</label>
           </span>
+          <span class="item-field-label-medium">
+            <label class="short-label">Used?</label>
+          </span>
           <span class="item-field-label-medium">
             <label class="short-label">&nbsp;</label>
           </span>
@@ -92,9 +98,11 @@
           <a class="item-edit item-name-img" title="Edit Item"><img class="sheet-competence-img" src="{{skill.img}}" />
           </a>
           <span class="item-field-label-vlong2"><a class="roll-skill">{{skill.name}}</a></span>
+          <span class="item-field-label-medium">{{skill.system.value}}</span>
           <span class="item-field-label-long">{{skill.derivated.label}} ({{skill.derivated.value}})</span>
           <span class="item-field-label-medium">{{skill.system.bonus}}</span>
-          <span class="item-field-label-medium">{{skill.total}}</span>
+          <span class="item-field-label-medium">{{skill.total}}%</span>
+          <label class="attribute-value checkbox"><input type="checkbox" class="skill-used-id"  {{checked skill.system.used}}/></label>
           <div class="item-controls item-controls-fixed">
             <a class="item-control item-delete" title="Delete Item"><i class="fas fa-trash"></i></a>
           </div>
diff --git a/templates/apps/roll-dialog-generic.hbs b/templates/apps/roll-dialog-generic.hbs
index 13a07f5..56f79e4 100644
--- a/templates/apps/roll-dialog-generic.hbs
+++ b/templates/apps/roll-dialog-generic.hbs
@@ -26,6 +26,10 @@
         <span class="roll-dialog-label">Bonus/Malus : </span>
         <select class="status-small-label color-class-common" type="text" id="bonusMalus" value="{{bonusMalus}}" data-dtype="Number" >
           {{#select bonusMalus}}
+          <option value="-80">-80%</option>
+          <option value="-70">-70%</option>
+          <option value="-60">-60%</option>
+          <option value="-50">-50%</option>
           <option value="-40">-40%</option>
           <option value="-30">-30%</option>
           <option value="-20">-20%</option>
diff --git a/templates/items/item-skill-sheet.hbs b/templates/items/item-skill-sheet.hbs
index 71a0535..086b1ab 100644
--- a/templates/items/item-skill-sheet.hbs
+++ b/templates/items/item-skill-sheet.hbs
@@ -25,6 +25,10 @@
               </select> 
             </li>
 
+            <li class="flexrow"><label class="item-field-label-long">Starting skill value</label>
+              <input type="text" class="item-field-label-long" name="system.value" value="{{system.value}}" data-dtype="Number"/>
+            </li>
+
             <li class="flexrow"><label class="item-field-label-long">Bonus</label>
               <input type="text" class="item-field-label-long" name="system.bonus" value="{{system.bonus}}" data-dtype="Number"/>
             </li>