I've been flying for about five years, the issue is when I'd moved the ailerons stick to either to right or left the elevators will move, this transmiter controls my first model (Ultimate) and I have the same number of servos as I do on my second model (Extra 300). Issue begins when I switch from first to second model, and maybe you're wright about accidentally enabled a mix somewhere in the transmiter, which I am not aware of. I guess my next move is to compare settings in both models and see if I can find a difference in between, Thanks for your feedback.