For such an important thing to have on a vehicle, YTM brakes are a pain in the neck to find
Update: I found out that the bolt holding my rear brake lever onto my caliper had been ripped our in the past, removing all of the threads but leaving the caliper parts still usable. So, I tapped the caliper pressure plate for the same thread as a small-block Chevy Rocker stud, and am using a stud instead of a bolt because nuts are easier to come by than bolts of the correct diameter. I then cut 4 coils off of a Traxxas Stampede coil-over and use the long end as a brake return spring. Sketch, but successful!