Cool. I didn't know there was Mulit-Engine forum on RCU. I flew a TwinStar over the weekend and loved it. Now I'm trying to find a 4 -engine kit. I have 3 OS .25 engines and would like a kit that uses the same sized engines. I found a Royal B17 that uses .25's, but apparently the kit is now longer available. Any other kits out there? It doesn't have to be a B17.