When I did mine I used 1000 grit, then filled the gouges with JB weld, then hit it with 1000 grit again. Then finished with wet sanding 2000 grit.
No seal/bushing issues for over 1 year.
^This.
Fixed quite a few in my day. Although I never wet-sanded with with the 2000 grit just used it dry.
I prefer the nail polish solution over JB Weld as drys much quicker and you can do 3 or 4 coats with sanding, and finish the job, ready to ride in a couple hours. I've always had black stantions so with the black nail polish its impossible to tell where the scratch was.
Weird thing too is I read somewhere to polish the stantion after with womens nylons so did that on the last couple repairs and it does help to blend in the repair.
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