Can anyone share tips for effectively adjusting the spring balance on brakes like these? Sheldon talks about them as being "Diacomp" style. I get that the bearing surfaces in the bosses need to be clean and greased and that the wheel needs to be centered on the frame, but is there a technique for holding both of the arms/springs in a specific position - at the same time - (centered), so that you can then tighten them down and have them stay put? Some kind of third hand? It seems like even a small adjustment of one ruins the balance of the other.

I try over and over, but the brakes still don't center... One of them always seems to stay off center. Would a small tourque wrench help? The spring adjusters need a cone wrench or a small crescent wrench because there are just the two surfaces that the wrench can grab. But has anyone seen a socket that would fit these adjusters, that could then be snapped on to a 3/8ths inch torque wrench drive? Maybe if the springs were tensioned by the number instead of by eye and feel? It gets to a point where you seem to have to accept a slight imbalance and then compensate for it by mis-adjusting the shoes...

I have these brakes on an 85 Ross Mt. Hood. My winter commuter. The rear brake is mounted on the lower chainstay - where it's hard to reach and gets filthy when riding in the winter... Thanks in advance for comments.