Yeah, the pulleys are kind of iffy, but somebody has replaced the old belt with a couple plastic zip ties. Hafta fix that sometime, but it works for now. I saw your post about the one you found, you're gonna hate me cause I paid $3 for mine.
Anybody know anything about the Zenith?
Edit: It's apparently a model C724, mid 50's. The knobs are supposed to be gold, according to a pic I found, so there's another minor project...