I am Working on finishing a parts guitar and ran into an issue I can't find an answer to elsewhere. I'm building a Stratocaster with three single coils, and the Clapton style mid-boost. When I plug the guitar into my amp and touch the pickups with a screwdriver I get the pop, however when I string it up and play I get nothing. If it's strung up and I touch it with a screwdriver it works. Has anyone had anything like this happen before?