I have a couple of Gibson Thunderbirds and a Les Paul Classic guitar with nitro finishes that have some light scratches, buckle rash, and hazing from where the strap rubs against the body. They haven't been abused or scratched through to the wood- just signs of everyday wear and tear in the clear coat itself. I've used the Gibson polish on them with the yellow cloth to keep them as clean as possible from the front, but am wondering what would be the best way to buff out these light scratches and dull faded ares on the back? Just want to freshen them up make them nice and shiny again.