Well, if effort is no problem, I can suggest going to a luthier. See if he will let you use the glue warmer (not sure the actual name, but its a device the warms up epoxy and glue so that somehting initially fixed can be moved or removed). If so, it might be a good idea to buy a blank fretboard, hammer in and shave the frets to your personal preference, and shape the fretboard to your guitar neck. Re-glue, let sit for a day or so, sand, finish, stain. WA-LA you will have beutifully fresh feeling, fully customized fretboard. Which may or may not improve the sound of your guitar, but hey if the guitar sounds bad, there's no where to go but up.
