I had a midwest jetster once and it had no rudders, i put the steering servo on the 4th channel. It was not lined up properly so i was putting trim into it to correct the steering,, Only problem was i had in my mind it was a 3 channel plane and i was putting trim into the airelons instead of the nose wheel.. Could not understand why it would not steer straight even after putting in trim.. NEVER thought about it, poked it full throttle and took off. Plane went inverted almost immedialtey... I DID save it but i dont know how... Cant belive i did that... Russ