diff --git a/Source/Harmony/B9PS.cs b/Source/Harmony/B9PS.cs
new file mode 100644
index 00000000..e502faf4
--- /dev/null
+++ b/Source/Harmony/B9PS.cs
@@ -0,0 +1,80 @@
+using HarmonyLib;
+using UnityEngine;
+using System.Linq;
+using System.Collections.Generic;
+using B9PartSwitch.PartSwitch.PartModifiers;
+using B9PartSwitch;
+
+namespace RealFuels.Harmony
+{
+    [HarmonyPatch(typeof(ModuleModifierInfo))]
+    internal class PatchModuleModifierInfo
+    {
+        internal static bool Prepare()
+        {
+            bool foundB9PS = AssemblyLoader.loadedAssemblies.FirstOrDefault(a => a.name.Equals("B9PartSwitch", System.StringComparison.OrdinalIgnoreCase)) != null;
+            return foundB9PS;
+        }
+
+
+        [HarmonyPostfix]
+        [HarmonyPatch("CreatePartModifiers")]
+        internal static IEnumerable<IPartModifier> Postfix_handleMFTConfig(IEnumerable<IPartModifier> result, Part part, ModuleModifierInfo __instance, BaseEventDetails moduleDataChangedEventDetails)
+        {
+            foreach (var partModifier in result)
+            {
+                if (partModifier is ModuleDataHandlerBasic)
+                {
+                    ModuleMatcher moduleMatcher = new ModuleMatcher(__instance.identifierNode);
+                    PartModule module = moduleMatcher.FindModule(part);
+                    ConfigNode originalNode = moduleMatcher.FindPrefabNode(module);
+                    if (module.moduleName == "ModuleFuelTanks")
+                    {
+                        yield return new ModuleFuelTanksHandler(module, originalNode, __instance.dataNode, moduleDataChangedEventDetails);
+                        continue;
+                    }
+                }
+                yield return partModifier;
+            }
+
+        }
+    }
+}
+
+namespace B9PartSwitch.PartSwitch.PartModifiers
+{
+    public class ModuleFuelTanksHandler : PartModifierBase
+    {
+        public const string PART_ASPECT_LOCK = "ModuleFuelTanks";
+
+        private readonly PartModule module;
+        private readonly ConfigNode originalNode;
+        private readonly ConfigNode dataNode;
+        private readonly BaseEventDetails moduleDataChangedEventDetails;
+        public ModuleFuelTanksHandler(PartModule module, ConfigNode originalNode, ConfigNode dataNode, BaseEventDetails moduleDataChangedEventDetails)
+        {
+            this.module = module;
+            this.originalNode = originalNode;
+            this.dataNode = dataNode;
+            this.moduleDataChangedEventDetails = moduleDataChangedEventDetails;
+        }
+
+        public object PartAspectLock => PART_ASPECT_LOCK;
+        public override string Description => "a part's ModuleFuelTanks";
+        public override void DeactivateOnStartEditor() => Deactivate();
+        public override void ActivateOnStartEditor() => Activate();
+        public override void DeactivateOnSwitchEditor() => Deactivate();
+        public override void ActivateOnSwitchEditor() => Activate();
+
+        private void Activate() => ApplyNode(dataNode);
+        private void Deactivate() => ApplyNode(originalNode);
+
+        private void ApplyNode(ConfigNode sourceNode)
+        {
+            var evtDetails = new BaseEventDetails(BaseEventDetails.Sender.USER);
+            evtDetails.Set<ConfigNode>("MFTNode", sourceNode);
+            module.Events.Send("LoadMFTModuleFromConfigNode", evtDetails);
+            module.Events.Send("ModuleDataChanged", moduleDataChangedEventDetails);
+        }
+    }
+}
diff --git a/Source/Harmony/HarmonyPatcher.cs b/Source/Harmony/HarmonyPatcher.cs
new file mode 100644
index 00000000..21e8172d
--- /dev/null
+++ b/Source/Harmony/HarmonyPatcher.cs
@@ -0,0 +1,14 @@
+using UnityEngine;
+
+namespace RealFuels.Harmony
+{
+    [KSPAddon(KSPAddon.Startup.Instantly, true)]
+    public class HarmonyPatcher : MonoBehaviour
+    {
+        internal void Start()
+        {
+            var harmony = new HarmonyLib.Harmony("RealFuels.Harmony.HarmonyPatcher");
+            harmony.PatchAll();
+        }
+    }
+}
\ No newline at end of file
diff --git a/Source/RealFuels.csproj b/Source/RealFuels.csproj
index 0733d6c9..008361b3 100644
--- a/Source/RealFuels.csproj
+++ b/Source/RealFuels.csproj
@@ -38,9 +38,16 @@
     <PlatformTarget>x64</PlatformTarget>
   </PropertyGroup>
   <ItemGroup>
+  <Reference Include="0Harmony, Version=2.2.1.0, Culture=neutral, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <Private>False</Private>
+    </Reference>
     <Reference Include="Assembly-CSharp">
       <Private>False</Private>
     </Reference>
+    <Reference Include="B9PartSwitch">
+      <Private>False</Private>
+    </Reference>
     <Reference Include="ROUtils">
       <HintPath>..\..\..\..\..\..\Games\R112\GameData\ROUtils\Plugins\ROUtils.dll</HintPath>
       <Private>False</Private>
@@ -102,6 +109,8 @@
     <Compile Include="EntryCosts\UpgradeManager.cs" />
     <Compile Include="EntryCosts\EntryCostDatabase.cs" />
     <Compile Include="EntryCosts\PartEntryCostHolder.cs" />
+    <Compile Include="Harmony\HarmonyPatcher.cs" />
+    <Compile Include="Harmony\B9PS.cs" />
     <Compile Include="Pumps\RefuelingPump.cs" />
     <Compile Include="Tanks\EditorCrossfeedSetMaintainer.cs" />
     <Compile Include="Tanks\FuelInfo.cs" />