Yeah, I had a very SLIGHTLY bent spindle, not even noticable until i rolled it along a mirror, then it had an every so slight wobble. My CP Pro still appears to have a wobbly head but around 25-30% throttle its smooth as silk, I just balanced the entire head assembly, blades and all, all in one piece using the flybar as a pivot. A little tape to the light side and voila, new heli.