In Bergen County NJ, I use Phil D'Angelo in Fair Lawn. He did a superb job on my custom 10 string. He's also done a fret file and set up on my Skylark as well as numerous jobs on Strats, Les Pauls, neck replacements, repairs on 2 Gianinnis, shielding and set up on a 9 str. Tanatos bass, my Steinberger guitars including putting in Sustainers. He is currently doing sustainer jobs on a Strat and Selvia for me.
Not sure where you are located but this is my rec.
Hope you find satisfaction.