never seen one of these...

my sister in law''s 73 or 74 Satellite w/318 had a nylon coated cam gear. At near 200k, I tore it down because I saw the rotor spinning in kind of a jerking manner. This is no exaggeration, there was only one real tooth still on the cam gear. All the rest of the teeth had lost their nylon coating, and were worn down till they were really just aluminum bumps. It still ran, not well, but it still ran.