Thanks, all. This is really helpful. Most of the bigger pieces on this bike, like the cranks themselves, the Weinmann centerpulls, the Nuovo Record derailleurs, cleaned up pretty easily. It's just the little bolts here and there that look awful! These chainring bolts went into the EvapoRust last night. Going to fish them out now and see if I can get them to shine up at least a bit with some Flitz and elbow grease.