I am just trying to clean up my old black 1978 telecaster but I can't get it to shine. I think the finish is poly? I rub it with a slightly damp microfiber cloth and it briefly looks shiny again but then fades to a kind of smudgy matte. Ideally I would like it to stay glossy like it used to be. I am not looking at refinishing it though. I just want to clean and polish it up. While I am posting, what it the best way to clean up old hardware, like the bridge, pickups, and control plate?