I hope this is an isolated case, but we have had one other transmission come back with a different problem. The drill transmissions were all opened up and modified by our crew of staff and student volunteers to remove the pins that prevented back-driving. Nothing else was suppose to be removed. We did this to about 50 transmissions (a significant amount of time and work) over several days. I apologize for any defects and assure all teams that we will gladly replace /repair any transmission that does not work properly. Call 248-451-2732 if you think you have a problem.