Actually, I just got done putting in a key. I Dremeled a slot into the clutch center and the female piece and slipped a key into the hub. Fits like a glove. I do not believe that there will be any more problems with the coupler. I also removed the bearing and drilled and tapped setscrews to keep the coupler from coming off the motor shaft. So that makes 8 setscrews alltogether.
