I had a similar problem with my GGTS when I got it from another member. You might try using a set of pliers to CAREFULLY back the hex nut out and separate it from the insulator. That might reveal what's making it stick. Here's a link to the GG Stealth exploded diagram. On mine, I ended up having to replace the center pin with a 6D box nail wrapped with tape just "tall enough" to fit in the insulator bushing, added a couple O-rings and then used a cutoff wheel to cut the "channel" in the top of the pin (nail). Being a carpenter, you probably have most of this lying around somewhere. That said, it is a pretty bad situation and I'm sorry things didn't go well, but as Silver didn't mention any names, I believe she was doing as you suggested by trying to resolve it privately, she just didn't know enough about them to help out and reached out publicly for help to try and help you out. But that's between the two of you as far as I'm concerned. Happy to help in any way I can.