Hello guys, I recently bought an APM2 and a dynam hawksky(multiplex easystar clone) to get me started out in making UAV's. However, it comes with  4 ch tx/rx, and the plane uses all 4 channels. Would I be able to disable the rudder to use that channel for the autopilot and fly the plane only with the wing flaps? I'm assuming I would also have to modify the radio unit?