I am building, well restoring an airframe for my 400! its almsot done :P and i agree with knot, if you are unsure about taking the engine apart then dont do it.

I also bought another airframe that the 400 might go in first. the model is a mahers pacer with 82'' span, but i think the 400 will be way over the top for it....i will see how i feel about it, i may use it for testing the laser 240v thats going in the P39....but i have a 300v that needs testing, and thats same power as the 400...hmm...so many choices. whatever i do it needs new servos as 2.4kg futaba 3001's aint gonna cut it. i may also have to do some ritual sacrifice of the engine that came with it....a 45cc two stroke side intake piston ported petrol engine....blergh i feel dirty just talking about it! quick, find a propper engine....ooh, a V twin, thats better *cuddles engine* :P lol