Okay so I pulled the nasty old leatherette off a kodak 3A that was given to me. But now there are, don't know how to best describe it so bare with me, "spots" on the wood. There are glue/leatherette residue. I want to know the best way to get rid of these. Sanding works, but takes for ever. And I'm going to stain it, so it does matter if they are there, I think?