I checked rear axle and related parts, everything checked OK as far as I could tell. There is no noise in the axle. The driveshaft is a one piece and has new u-joints. I checked it for out of round using a indicator. I found it was out by .030" at the front. It is at the shop now getting checked out. They like them to be with in .010" or less. I also plan to change out the front and rear bushings in the transmission when I pull it for the converter change. If the driveshaft cures or even helps a little, I still plan the converter change. I never did like this one, it seems way to tight, it helps fuel milage, but really jumps into gear even at 650 rpm. I will keep you posted, and thaks for the ideas, Joe