I've had a bit of a vibration in my 85 runner. recently pulled my front driveshaft to replace a ujoint, and figured on checking the rear. there is play where the rear driveshaft attaches to the T-Case output flange. Bolts are all there and tight. Is this normal? I'd say at least 1/8" in each direction. Is this something that can be tightened up if need be? Or is there some bearing damage in the T-Case? There is no play at the ujoint, just on the flange and inside the case I guess. Any help or ideas?