How's that for craptastic artwork? As this pic shows, the original version of the brake linkage would make for a very busy pedal when in motion as well as terribly inconsistent braking. By replacing the linkage arm with a simple cable nearly (if not) all of the wonkiness.....that's a word....would be eliminated. a couple simple bolt on "cable towers" to define the bounds of the cable, an equally simple clevis on one end and repurposing of the threaded adjuster on the drum end and you're golden.