OK so I just got my car running and took it out today. It has 3.73 gears and a detroit locker in the rear end. It will lock in sometimes and sometimes it wont. Anyways I was doing a few burnouts and launching it a few times and the left tire was spinning? I would think if im going straight the right tire would spin or both would not just the left side? Say I go around a corner I can hear it unlocking and feel it lock back in.