I think you are correct speedracer. I assumed with the ATV's the same, 90 degree control arm to servo orientation, the ailerons would mirror each other. Apparently that is not always true. I will do some differential adjustments and see if I can minimize the corkscrew side even though it isn't horrible. I just hoped the plane would roll either direction the same way. Probably a little more practice on my part would improve the situation considerably.
Mike