I have just aquired a 1981 fretless precision - its soooo yummy, I sound like Jaco (kinda) only problem is that the output level is quite low and theres some damage to the fingerboard where its been strung with roundwound strings, they've taken a fair few chunks out of it. I was just wondering how people felt about how much you should alter an antique such as this. For example if I changed the pickups would this be considered an unforgivable sin? and can I get the fingerboard sanded without being immediatley dispatched to the sevneth layer of hell? Im kinda worried about compromising the original sound of the bass - what do you cats think?