KSPI-e 1.0.9 In the "InterstellarFuelSwitch" folder, under parts, you have a couple gas tanks that don't match up with the current fuel types. InterstellarGasTank-PB-Stack.cfg & InterstellarGasTank-PB-X50R.cfg resourceGui = Argon;CarbonDioxide;Hydrogen;Krypton;Neon;Nitrogen;Oxygen;Xenon;Nothing resourceNames = ArgonGas;CarbonDioxide;Hydrogen;KryptonGas;NeonGas;Nitrogen;Oxygen;XenonGas;Structural resourceAmounts = 224000;224000;224000;224000;224000;224000;224000;44800;0 Now, that particular part would be awesome (maybe re-textured so it doesn't look like the stock xenon tank) 'cause there isn't a tiny interstellar tank yet. (or just re-adjust the other 3 to be able to shrink down further, at least down to .625 for tiny drone like vessels)