There's a guy near where I stay who fixed a bump on my upright bass a few months back, he also fitted some winder-adjusters to the bridge for me...did a good job and was very cheap!
He builds acoustic guitars and other string instruments as a hobby, but don't know about electric instruments, think he's more of a woodwork guy. Name is Marshall Dow, he has a wee workshop in Newton Dee...recommended for 'classical' strings/acoustic work
