I have a Dentron Super Tuner (not the Super Super) that I was recently given. I opened it up and the plexiglass-looking insulators under both variable capacitors was cracked, some of it shattered. Sounded like a box of broken glass. I've tried to make my own insulator but couldn't quite get the right height/shape for it since so much of it was broken. I tried tracing the capacitor frame and using wood just as a template to cut out some thicker plexi stuff later. But not happy with the result so far. The capacitor shaft grinds and binds a bit at the slightest off angle. Not sure if that could cause arcing. Now there might be a place where I can just order two of them. Anyone know where I might find them?