Okay, Im used to six string guitars, and them sometimes having issues with fret outs or dead frets. I strung up my Peavey T-20 bass with Rosewood 'fingerboard'( how can you call a fretless a "fretboard"?) , and between the 15th and 17th fret, theres a dead spot where it the notes are dead on the two high strings. I adjusted the micro tilt, and also the trussrod, but havent messed with the saddles mostly cause I can't find a allen wrench that fits which is very odd ...but the saddles seem to be allright, and the action is already fairly high. So, on a six string I would whip out my fret leveling tool and grind away, but what to do on a fretless bass? Do I use the same tool to level the board instead? Would it scratch up the rosewood?