I did check to make sure I didn't have any control reversal, as I keep forgetting to put tape on the back of my transmitter to put which model # is which. That is the only thing that I don't like about the 6TXA. Models are numbered 1 - 6. Right now I have 4 models programmed and by the end of winter I should have all 6 filled. I will admit that I did not tug on the servo before I attached the wing. I guess I just figured out something else to preflight