1 Dasgarrett 4 years ago I have a customer in my shop today who brought in this Gretsch. There is no model or serial number on it. The problem I'm having is the trem. There is an L-shaped bolt that runs from the string mount bar into the body where it attaches to a brass plate with a spring. I can't figure out how to set it up correctly though. My instinct is telling me he has a piece missing, but I can't be sure. Has anyone seen a trem like this?