diff --git a/modules/pegasus-actor.js b/modules/pegasus-actor.js
index 8c01d7a..2da7f97 100644
--- a/modules/pegasus-actor.js
+++ b/modules/pegasus-actor.js
@@ -1744,7 +1744,7 @@ export class PegasusActor extends Actor {
     let effects = this.items.filter(item => item.type == 'effect')
     for (let effect of effects) {
       effect = duplicate(effect)
-      if (!effect.system.hindrance && !effect.system.statdice
+      if (!effect.system.hindrance && !effect.system.statdice && !effect.system.reducedicevalue
         && (effect.system.stataffected != "notapplicable" || effect.system.specaffected.length > 0)
         && effect.system.stataffected != "special"
         && effect.system.stataffected != "powerroll"
@@ -2214,19 +2214,28 @@ export class PegasusActor extends Actor {
   }
   /* -------------------------------------------- */
   processVehicleStatEffects() {
-    let effects = this.items.filter(effect => effect.type == "effect" && effect.system.genre == "positive" && effect.system.statdice)
+    let bonus = 0
+    let effectsPlus = this.items.filter(effect => effect.type == "effect" && effect.system.genre == "positive" && effect.system.statdice)
+    let effectsMinus = this.items.filter(effect => effect.type == "effect" && effect.system.genre == "negative" && effect.system.reducedicevalue)
     for (let statKey in this.system.statistics) {
       let stat = duplicate(this.system.statistics[statKey])
-      let bonus = 0
-      for (let effect of effects) {
+      for (let effect of effectsPlus) {
         if (effect.system.stataffected == statKey) {
           bonus += Number(effect.system.effectlevel)
         }
       }
+      for (let effect of effectsMinus) {
+        if (effect.system.stataffected == statKey) {
+          bonus -= Number(effect.system.effectlevel)
+        }
+      }
       if (bonus != stat.bonuseffect) {
         stat.bonuseffect = bonus
+        if (stat.currentlevel > stat.bonuseffect+stat.level) {
+          stat.currentlevel = stat.bonuseffect+stat.level
+        }
         this.update({ [`system.statistics.${statKey}`]: stat })
-      }
+      }  
     }
   }
 
diff --git a/modules/pegasus-utility.js b/modules/pegasus-utility.js
index 524ce71..4d1585b 100644
--- a/modules/pegasus-utility.js
+++ b/modules/pegasus-utility.js
@@ -544,7 +544,7 @@ export class PegasusUtility {
 
   /* -------------------------------------------- */
   static getDiceFromLevel(level = 0) {
-    level = Number(level)
+    level = Math.max( Number(level), 0)
     return this.diceList[level];
   }
   /* -------------------------------------------- */
diff --git a/system.json b/system.json
index 60ba327..71fb0f3 100644
--- a/system.json
+++ b/system.json
@@ -253,7 +253,7 @@
   ],
   "title": "Pegasus RPG",
   "url": "https://www.uberwald.me/data/files/fvtt-pegasus-rpg",
-  "version": "10.1.7",
-  "download": "https://www.uberwald.me/gitea/uberwald/fvtt-pegasus-rpg/archive/fvtt-pegasus-rpg-v10.1.7.zip",
+  "version": "10.1.8",
+  "download": "https://www.uberwald.me/gitea/uberwald/fvtt-pegasus-rpg/archive/fvtt-pegasus-rpg-v10.1.8.zip",
   "background": "systems/fvtt-pegasus-rpg/images/ui/pegasus_welcome_page.webp"
 }
\ No newline at end of file