[catsylve]

We likewise had a small problem with the key slipping out of one of our motors in the toughbox. Fortunately it didn't cause too much of a problem at the time and the robot just starting going in circles when one side stopped working. We put a couple of spacers in and it solved the problem. The key just seemed a little bit short. We have had no problems since and the spacers worked great. Other than that, we have really liked the setup.