Ty for the welcome. I did some more testing and it looks like its not the AoA but straight vs swept the i made two of the same plane one that has a straight wing and one swept and only the swepted one flys. http://i.imgur.com/mYPwYdx.jpg http://i.imgur.com/ut3wDmW.jpg Its looks like Im need work more on my Hayes planes. Yea i will need to do that.