I'm looking at getting a 2nd hand bass as a bit of a restoration project. I've done little bits & pieces before, like resoldering loose wires, tweaking the action and fixing the intonation, but it's my first time actually restoring a bass.   Most of the issues described in the bass I'm fairly confident with (or at least, I know where to start). But I'm thrown by what looks like missing inlays on the fretboard.       First of all, does anyone know what coul