They both feel about the same heavy. But it's not the driveshafts...
I spent the last 4 hours on this, had them both off, apart, cleaned splines, greased u-joints, put them back on and the clunk is completely unchanged. In fact it may be a little louder now, as I left my skidplates off until I figure this out.. hmm.
Check out how much grease I was able to squirt out the zirc hole on the rear...
I only can take credit for maybe 6 squirts of that.
82 fj40, 99 uzj100, 06 gx470
05 525EXC, 01 XT225, 07 TTR90, 07 CRF50