I have one in real good shape except for a few scratches and some shallow gouges. Would you reccomend sanding and then grooving out the gouged areas for filler?
Toolmanmike: I would get the most of them undercut ( not V but /\ so the filler has a better grip.) Be warned it takes a bit more of your time to do with a lightly damaged wheel than the one I did. It is just more work to do the little gouges and scratches than the deeper ones. You might be better off undercutting them all a lot deeper (I would if I was doing it so I could get a decent amount of epoxy into the scratches and gouges) , even the little ones just to improve the grip of the PC-7 to the wheel and the actual time doing the under cutting by trying to deepen it "just a bit".