diff --git a/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra100.cfg b/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra100.cfg
index a7c018f..0bece3c 100644
--- a/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra100.cfg
+++ b/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra100.cfg
@@ -15,9 +15,9 @@ PART
 	node_stack_back = 0, -0.212, 0, 0, -1, 0, 1
 
 	TechRequired = advConstruction
-	entryCost = 1900
-	cost = 800
-	category = Utility
+	entryCost = 950
+	cost = 400
+	category = FuelTank
 	subcategory = 0
 	title = Tundra 100
 	manufacturer = Wild Blue Industries
@@ -26,7 +26,7 @@ PART
 	attachRules = 1,0,1,1,0
 
 	// --- standard part parameters ---
-	mass = 0.175
+	mass = 0.0875
 	dragModelType = default
 	maximum_drag = 0.2
 	minimum_drag = 0.2
@@ -94,7 +94,7 @@ PART
 		isBreakable = false
 		resourceName = ElectricCharge
 		impactResistance = 20
-		chargeRate = 1.4
+		chargeRate = 0.7
 	}
 
 	RESOURCE
@@ -109,4 +109,4 @@ PART
 	{
 		cube = Default, 1.056,0.9302,0.35, 1.056,0.9302,0.35, 1.931,0.9987,0.09846, 1.931,0.9987,0.09846, 1.345,0.9303,0.3014, 1.345,0.9303,0.3014, 1.037E-14,-1.09E-07,1.817E-07, 1.585,0.8461,1.25
 	}
-}
\ No newline at end of file
+}
diff --git a/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra200.cfg b/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra200.cfg
index a276649..77ea1b4 100644
--- a/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra200.cfg
+++ b/GameData/WildBlueIndustries/Buffalo/Parts/FuelTank/Tundra200.cfg
@@ -42,7 +42,7 @@ PART
 	MODULE:NEEDS[KIS]
 	{
 		name = ModuleKISInventory
-		maxVolume = 200
+		maxVolume = 1500
 		externalAccess = true
 		internalAccess = true
 		slotsX = 4
@@ -109,4 +109,4 @@ PART
 	{
 		cube = Default, 1.056,0.9302,0.35, 1.056,0.9302,0.35, 1.931,0.9987,0.09846, 1.931,0.9987,0.09846, 1.345,0.9303,0.3014, 1.345,0.9303,0.3014, 1.037E-14,-1.09E-07,1.817E-07, 1.585,0.8461,1.25
 	}
-}
\ No newline at end of file
+}