migflyer, what engine you're using on yours? did you had a chance to do more aerobtics? share your experience with us, would you? BTW, if you set a little negative curve on your throttle control, this plane should fly even better on your 3Ds. it seems like this Challenger responds to the engine torque quickly. So it will start to roll very quickly on a torque roll. but it's easy to be slowed down with ailarons.