I think I need some assistance with the engine mods and real fuels. I'm playing on regex's 6.4:1 Kerbin. I've installed real fuels, procedural parts, FASA (with the realism patch), KW, and real engines. (And the Realism Overhaul Downloads) I see options for changing the fuel type via the realfuels GUI, but I don't see any option for the engines to use any fuel other than LiquidFuel, I'm sure I've just missed something obvious...