Just bought a used LP-style guitar with block inlays, a couple of which are sticking up i.e. not perfectly flat with the fretboard. (Frankly, a couple of the inlays look like they were poorly glued in). 1. Is this normal wear ("inlay sprout")? 2. Can it be fixed? 3. If it can be fixed, how complicated is it, and how much should it cost? Thanks.