My Gibson L6S reissue came with surprisingly nice setup. But the light maple fingerboard had what appeared to be thick polyurethane finish. With light play, it started to groove and scrape and wear and bubble and chip at the lower frets where I stretched strings a lot. So at first I just leveled the edges of the chips. But the finish is really too soft and thick. So I sanded and scraped it, and did a really nice job removing the finish mchanically. I also broke the sheen on the back of the neck. This was a little troubling for me to do to a beautiful new finish, but now it works better and that matters more...I'm keeping this one to play. But now, some of the fingerboard seems like the grain is really well-sealed, other parts less so (lighter color). I don't want to have to wash my hands first every time I want to pick it up and play, but I guess I should. So if I spray on a thin hard finish, will it adhere well to any existing remaining poly that's sealing the grain? What is the preferred finish to use? Remember Clapton's guitar on the Layla jacket? I'm not into 'relic' treatments, but if it looks used that's OK. But the thick poly wasn't going to work IMHO. I want something much harder than the wood. Should I spray some kind of lacquer? Then I'm assuming I'd have to lightly sand it off the frets with some super-fine wet or dry? Or should I just leave it raw?