I have a MGM that I just recently received. At first I used a FM radio to progam it. It seemed smooth on the bench. Then I changed to a Spektrum and it was not so smooth on the bench. It seemed to lock up the drive train for a second when I would blip the throttle. Looked like it was very hard on the drive train. I thought if I do the auto tune it might help correct whatever is causing the wierd stuff it was doing. I'm sure others must be using the spektrum with success.

Have you tried the auto tune?