Originally Posted by
Pond Skipper
The material used to polish / clean car light lenses or plan cream tooth paste should work too.
I've also used Mother's polish and 2000 grit polishing compound, the former recently did a good job on an iffy Norvel crank fit. Well, I think it did a good job, the crank freed right up and the engine works.
For a McCoy Red Head, sand or fine gravel should be about perfect.