Hi all- I've been browsing here for years and it appears I finally have a question that hasn't already been answered. I have an 84 Trek 620 that is begging for new cantilever breaks after riding it all winter... I picked up one set of Tektro CR720s on good bang-for-the-buck reviews from others (and assuming by the P/N that this were MADE for old trek tourers) and they did not fit at all. Specifically the shoes could not go low enough to hit my 27" rims and the springs did not engage at all.

So my question is can anyone give me a tip on some modern (preferably not NOS) brakes that would match a set of Dia Compe 960 cantis? From the 20+ year old sutherlands manual I can get my heands on the 960 dimensions are as follows:

Pivot to Brake Shoe Clamp Bolt Hole (mm): 23
Pivot to Cable attachment: 40

Thanks in advance for any help you can give.