John,
Use steel wool or a course shop rag & spray the rag with pledge wax with orange oil, the one in the spray bottle. Use on metal & wood. You'll like the results. Just wipe down several times a day for a week or so. If the rust is too thick you can use the steel wool followed by the wipe downs with the pledge & orange oil. In a short time the stock finish will improve & blend together.
Regards,