I always thought it was odd when John said ground or something wasn't hooked up on receipt of guitar and that he would say that on camera to a company he was endorsed by.   I doubt Cruz, FCS MB setup guitar and played it before shipping to a major artist that he wouldn't detect a problem before shipping.  Could something came loose in transit...maybe, but doubtful...IMO.    He also confirmed what we knew, Dippers were not in JM's BLK1, but hand wound pups close to SRV pup guitar, which are likely much like, or same as FCS 60's.....my guess.