I have a 78' Fender p-bass and I'm trying to figure out if I should leave it completely original or work on the finish and change the pickups? The bass is ash (at least i think it is...it's about 12-13lbs.) with a natural finish and maple neck and fretboard. At a gig a few years ago the weather was really cold and then the show was really hot...so, the finish cracked and is now bubbling. Am i going to "hurt" the value of the bass by refinishing it? How much is a 78' in good condition worth? I bought it back in 92' for $400 and have recently seen basses just like mine go for around $1,000 at music stores. What I would really like to do is trade in this bass for a fretless 60s Fender p-bass or a MM Stingray what would you Fender experts recommend I do? Any suggestions or comments appreciated.