[Al Skierkiewicz]

I am of the "smoking gun" philosophy. If you don't find the problem, it is still out there and is waiting for a chance to occur again. If you know the cause then you can fix it. Have someone else look over the robot, what is obvious to them you might not be seeing. I have looked at hundreds of robots and pulled on a wire that was laying against the chassis that the team had been ignoring for weeks.