Clark W. Griswold
Join Date: Mar 2014
Location: ,location, location
Posts: 14,846
Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26
You want to trash what could be a decent brake (probably not for a cargo bike though) for a brake that people never really liked and had problems as you are having repeatedly when you could just get a set of Shimano brakes that work just fine and don't have the issues? I am baffled. I like vintage components to a point but if they weren't so good in their day or didn't hold up they belong in the trash or in a modern art masterpiece. SRAM/Avid back then didn't know how to do brakes, they sucked so frequently you saw SRAM derailleurs and Shimano brakes.
I know you really want to get them working and I am not discouraging that zeal and drive but running up a hill that ends abruptly at a cliff with a big drop to sharp jagged rocks just ain't worth it. There a better places to run that don't end abruptly and will allow you to enjoy the run and find other fun things along the way without issues.