I posted similar in C&V, but thought I'd try here as well. I just picked up a 1986 Schwinn High Sierra (CL - $40) for the kids in my school bike club. It has the sweet (to me anyway) Suntour roller cam brakes. Unfortunately, They're the ones with the plastic rollers, and I'm looking to replace them with the brass rollers. Anyone out there got any, or know of a source for these?