I seem to have a problem with getting the differential centered,and it staying centered.Also noticed that when centered,I have vibrations coming from the driveline.Going to check the "one tooth off" thing on the driveshaft u-joints first.The left tire was rubbing on the fender rim,is what started this journey.Re-centered the diff.,and all was fine for awhile,then the diff. shifted too close to the right fender, so I re-adjusted.It has wondered too close to the right again, and if I adjust much more,I fear the hiem bolt will be too far out of the shaft.Any takers? Thanks, and happy Fall to everyone. jimsjinx