diff --git a/src/Ic2ExpReactorPlanner/AdvancedHeatVent.java b/src/Ic2ExpReactorPlanner/AdvancedHeatVent.java
index 84b7d20..0a50cf1 100644
--- a/src/Ic2ExpReactorPlanner/AdvancedHeatVent.java
+++ b/src/Ic2ExpReactorPlanner/AdvancedHeatVent.java
@@ -11,7 +11,7 @@ public class AdvancedHeatVent extends ReactorComponent {
      */
     private static final String imageFilename = "reactorVentDiamond.png";     //NOI18N
     
-    public static final MaterialsList MATERIALS = new MaterialsList(2, HeatVent.MATERIALS, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("DIAMOND"), 4.5, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("IRON"));
+    public static final MaterialsList MATERIALS = new MaterialsList(2, HeatVent.MATERIALS, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("DIAMOND"), 2.25, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("IRON"));
     
     /**
      * Creates a new instance.
diff --git a/src/Ic2ExpReactorPlanner/ComponentHeatVent.java b/src/Ic2ExpReactorPlanner/ComponentHeatVent.java
index 8dc78cf..5633609 100644
--- a/src/Ic2ExpReactorPlanner/ComponentHeatVent.java
+++ b/src/Ic2ExpReactorPlanner/ComponentHeatVent.java
@@ -14,7 +14,7 @@ public class ComponentHeatVent extends ReactorComponent {
      */
     private static final String imageFilename = "reactorVentSpread.png";     //NOI18N
     
-    public static final MaterialsList MATERIALS = new MaterialsList(HeatVent.MATERIALS, 4, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("TIN"), 3, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("IRON"));
+    public static final MaterialsList MATERIALS = new MaterialsList(HeatVent.MATERIALS, 4, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("TIN"), 1.5, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("IRON"));
     
     /**
      * Creates a new instance.
diff --git a/src/Ic2ExpReactorPlanner/HeatVent.java b/src/Ic2ExpReactorPlanner/HeatVent.java
index 6a138c8..4578ec1 100644
--- a/src/Ic2ExpReactorPlanner/HeatVent.java
+++ b/src/Ic2ExpReactorPlanner/HeatVent.java
@@ -11,7 +11,7 @@ public class HeatVent extends ReactorComponent {
      */
     private static final String imageFilename = "reactorVent.png";     //NOI18N
     
-    public static final MaterialsList MATERIALS = new MaterialsList(10, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("IRON"), 1, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("TIN"), 16.0 / 3, "Copper");
+    public static final MaterialsList MATERIALS = new MaterialsList(8.5, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("IRON"), 1, java.util.ResourceBundle.getBundle("Ic2ExpReactorPlanner/Bundle").getString("TIN"), 16.0 / 3, "Copper");
     
     /**
      * Creates a new instance.