So I bought a 2005 Fender Jazz from the TB classifieds, and last night, I put a new pickguard on it. When I removed the original guard, there was a cavity routed from the control plate to the neck pickup. There was also a little circular hole cut in a little higher for purposes unknown to me. It was all finished, as well. This seems unusual, because I know thar many people play their jazzes with no guard. I know it was modified, the previous owner had some Fralin Pickups installed by Mike Lull, and I'm wondering if the extra routing might have been done then, or if basses from that era had that anyway. It's not a problem or anything, I'm just curious. If y'all'd like, I can try to see if I can post a picture, although I don't have a screwdriver in my dorm room.