If I read your initial post correctly, you were after a CNC part and the auto bearing is simply a "plus." Is that right? Since electrics don't quit, and since very small helis like this don't have much energy in the blades an auto is really not something that most would consider important. If you want to do autos, which are a beautiful move, get at least a .50 class heli, either glow or electric and don't worry about a situation which will never present itself.