I bought the plane used without servos and engine off the rc classifieds and the guy said he flew it like 10 times, I asked if the CG in the manual was right( I had problems with other planes before) ..he said it flew great at the exact CG in the manual...I used the same downthrust angle he had on the plane,...I don't know whats going on with it, I'll move the CG ahead a bit and see what happens...I still think with all that elevator he overcontrolled it