Mike would be proud of the plagerism! I would put a little bit of tape over the bearing at the back of the motor- keeps out the dirt & makes the bearing last longer. But that is basically what is required to stop the end bells from popping off.
I kno it needs tape but its not my motor is my neighbors that he letting me use to mock up my motor mount but i already told him to do it bt hes just one big procrastinator so i cant do to much for him.