I've a mint looking prism finder for an F camera, but one of the mirrors inside shows some slight flaking or corrosion at the corners. Is it possible to
have mirror surfaces refinished? Or easier to swap in an unblemished mirror from another finder? Should I just swap the shell onto a cosmetically challenged
finder instead? Is it possible to use any mirrors from the F's metered finders, or any F2 finders? Thanks.

