I have an old eagle2 that has been hacked around a bit. I have it built with no dihedral in the wing. Also, I have added a 1/2 inch of surface to the back of the rudder. The plane still fly's great and I have not added anything to the ailerons. If you set your control throws up high and build as I have mentioned, the plane will still fly well and be more aerobatic than the standard eagle II.