I'm trying to track down a vibration in my new-to-me '72 duster with a 727 and 8.75. I took a look at the drive shaft and u-joints last night and one thing that stuck out to me was the rear joint didnt appear to be centered in the rear yoke, the caps were tight in the straps, and the joint has the inner clips and they were there but one clip was up flush to the inside of the yoke but the clip on the other side set in between 1/16 - 1/8 of an inch in from the inside of the yoke. I loosened the straps and there is definetly that play between the inner clips and the inside of the yoke, this is not correct right? I'm going to investigate further tonight, but wanted to get some opions. thanks!