I recently acquired a MG N&W J which already has a very nice paint job. Unfortunately, the plating (Nickel or Chrome I’m not sure) used on the main and connecting rods has a lot of brass bleed-through. I could send the rods to be re-plated but there are potential problems that I’m not willing to chance which is why I’m asking for paint type/color recommendations. Can the rods be painted in place or is disassembly required? Spray or brush?