As a rule I would never go to the local, Guitar Center for any repair work, unless you have a known high quality tech there. The guys (or gals) who work there change strings and swap pickups in electric guitars, but may not know much about real work on an acoustic guitar, including basic set-ups. It's a generalization, but I've never run across anyone at a GC that I would trust to touch one of my babies. Nothing against Guitar Center on principle, I just don't think they are a home for qualified technicians.