Not mine but my buddies had a leaky pinion seal and a "clunking" noise....
replaced the seal and found where some PO had once been in the carrier and hadn't shimmed the carrier bearings correctly...
it had about .020 side to side play......
fixed it all and replaced the u-joints....and since he's an electrician....we pulled some wire and put up some lights in my addition....
rained all day, but we had a successful day...!
Discovered it was a a limited slip