[dave2953]

As far as the center support bearing is concerned, if setup properly it should last quite some time. The aggressive driving probably didn't much for the life of the bearing, but a new one is relatively inexpensive and easy to replace. I've actually welded the housing back together before when I had a still had a two piece drive shaft. The spot welds on the housings are not that great and are prone to breaking. I know of several guys that have welded them back and had no problems. I'm not sure about a fix for the tailgate, but I'm sure someone will chime in soon with a response for you.