I am very cautious about this sort of thing, because there is no going back once you do too much. Altering the angle of the cocking piece can be a big mistake for non-experts like me. So I just use a felt wheel in a Dremel, dipped regularly in some polishing compound, to make the surfaces mirror-smooth. Keep the moving circumference of the wheel going down the cocking piece face, not across it, so any microscopic scratches are taken out.Attachment 45019