I have a guitar finished in Seagraves satin clear(nitro). I'm not really happy with the finish. Its been curing for a few years now and it still has that sticky feel to it. Can I simply wipe it down with naptha and spray colortone satin clear nitro over it? I really don't want to sand back to the wood as I have a gorgeous color to the wood and I don't know if I could reproduce it.