I'm pretty sure there is some user error in there, because there's very few - if any - complaints matching yours. Either user error, or the shop is screwing you. Are you 100% sure the pickups you bought were new still sealed in the box, and not tampered with? It sounds like a scam if the distributor makes you pay full price for a pickup, it malfunctions, and then let you return it for a 50% refund. You don't see how they can just keep duping people with the same "new" pickup and continuously bring in 50% of the sale through returns? That would not be Seymour Duncan's fault.