[fredjacksonsan]

Originally Posted by Bob D.

I think what you're both describing is a binding/releasing drive shaft.
Does it feel & sound like a thud from the rear just as you come to a stop or just as you start from a stop?
The cure is to remove the drive shaft and grease the splines on both ends.

Sounds a lot like it, Bob. My rear driveshaft only has splines on the front end, but next time I have some time I'll take a look at that. I guess we won't be using enough grease to hurt the transmission any.