Ten years of whoopin with a big stick may be taking it's toll
I just changed the gears in my Dana and the teeth had a shine and they were starting to get sharp on the edges.
I know it's not much fun to get the backlash perfect but I like to get mine around .008
Someday I will replace it with an S-60 with the threaded adjusters and life will be easier every 10 years or so

Gus