After having taken down the right rear axle on my 1989 Westfalia to replace torn boots, I dismantled both CV joints and found a gouge in one of the outer housing tracks . I read about switching locations of the joints with the other axle CVs so the bearing surface would be on the opposite side of the track. Because of the different lengths of the two rear axles on the automatic transmission, the joints themselves needed to be switched and not the whole axle assembly's . Please share your expertise in the wisdom (or lack of) of this approach as opposed to a new joint replacement. I haven't heard any noise while cornering or sloppiness of the joint in hand to give me any indication of need for a replacement . Much thanks !