Hey there, Baldwin Gretsch owner here. I’ve been having a small trouble with my ‘69 Duo Jet, and I was hoping someone could help me out! When I plug a jack into the guitar, it works great, but if it gets bumped or stretched at just the right angle, it seems to lose connection. The jack itself is tightened well, it doesn’t seem to budge. When I opened it up to check it out, I saw some of the components are getting a little bit rusty. It doesn’t seem to affect the performance, but I thought maybe that coating on the jack could be contributing to the loss of signal. Anyone have a good was to clean the old jack and the pots too? P.S. I included a photo of the jack plate. Does anyone have any idea how to properly loosen/tighten the nut without a pair of pliers? I’d hate to butcher it if it needs to be removed.