Hi all!! I've just removed the frets of an older bass of mine and (I recognize, horribly) filled the fret slots using a fiberglass wood crack repair paste that I never used before, just to discover that it easily disintegrates by touching or getting it a bit wet. I did so because I didn't really care much about the aesthetics (not that ugly, really) and it was a lot easier than the regular method using wood veneer. Mostly because I don't have a rounded sanding block to preserve the necks shape, so I had to try to sand the minimum possible. My intuition tells me that if I use the correct finish over the paste (well, the whole neck) I could "glue" the paste in place and isolate it from moisture, thus fixing the problem. Am I on the right path? Which kind of finish would be good? I guess oils are not good because they're not sticky. I also understand lacquer is not a good idea in the fingerboard, right? Thanks in advance!!