I am almost positive that the locker is not working properly because of gapping issues. I think that it is around the cross shaft, is this fixed with thrust washers, a new cross shaft, or both. I jacked the rear end up and I can spin either wheel like it was on the set of price is right without holding the other. The locker seams to torque quit a bit when I slowly spun a wheel, I could move the tire almost an inch befor the locker caused the gear to move.