I have been having a problem with gear chattering (at least it sounds like it) when I decelerate. After running many tests I narrowed it down to the rear end or the drive line. I just replaced the rear end and sure enough, I still have the same problem. My drive line has less than 500 miles on it and the ujoints look good (no vibes, just noise) so if it is my d-line I am thinking the slip yoke must be bad. Does this happen? If so, how can I check it to be sure. I am going to go down and get a CV drive line on monday but don't want to reuse the slip yoke if it might be bad.