Finally got another USAC back in the family. Got this beautiful UCEW1QM about a week ago and have been doing my incoming guitar cleaning and getting ready for a set-up. Rare to see these up for sale and had to make an offer. My 1st Ultra neck as well. So far, have only swapped the non-original metal knobs with a set of white top hats and switch tip. Still has the original Dimarzio switch but pots have been replaced. I have a wiring harness from a J Custom with the VLX91 switch that will probably go in. Original pups as well. 2 PAF Pros and VS1 middle. Cosmo Edge was swapped at some point for a black Lo Pro. Beautiful rosewood board with the mother-of-pearle and abalone inlays. Super thick quilted maple top. Measures 15mm (.590") thick. '91 so it has the normal F serial number.