Refurbishing a vintage knoll pollock 657 chair  

Hi all, I have a pair of vintage Charles Pollock 657 arm chairs.  There are areas in the arms of the chairs where the black paint has chipped and is peeling off, specially at the ends of the arm.  I have heard from previous post that the arms are coated with epoxy paint.   I called knoll to buy a replacement arm but the re-release version has been altered and was told the part won't fit a vintage version, so I'm thinking of other possible options.    Does anyone have any knowledge or experience refurbishing these arms to a near original condition?Anyone painted them before?  Any services that would be able to accomplish this task?  I would love to be able to recoat the arms if possible.  Any ideas or advice would be greatly appreciated.photo attached thanks,Vincent