Hi all, I just bought a Bolex H16 Reflex camera and noticed right away that the diopter adjustment ring is broken. There's a crack all the way through it, which means that the ring won't remain where I want it to be. Perhaps I can glue it together, but I doubt that would last very long. Hence I'm wondering if any of you know where I could buy a spare ring. Or if there are other Bolex cameras with the exact same ring that I could buy for a cheaper price without too much trouble? Any recommendations on how to fix this? Thanks!