OK - took it apart last weekend. The right side hub and axle splines were completely stripped (left side still looked good). I had a friend pick the bike up and move it side to side, set it down, and didn't see any play in the axle - so the bearings in the diff should be good.
The axle nuts weren't the easiest to remove (broke a pipe wrench). I ordered up an axle / hub set on ebay as well as the bearing in the brake backing plate and dust seal for the differential. Hopefully, I'll get the parts this weekend and get her all back together.
Do the longer splines of the 93-00 make it stronger (less likely to strip out)?