Hi! Our team is now building our second robot for the season. We just finished our base. It has 6 high speed motors all connected with chain. When we tested our base yesterday, we noticed that our base moves to the right when it's supposed to be going straight. I did put one additional washer on the right side of the chain drive, so I'm thinking of getting rid of that, but does it matter that much? Or could our motors have any problem?