will "rebond" O/S, unfinished brake shoes and will grind, or "arc" them to your spec. They also have different brake shoe compounds for severe duty app's.[ All rebonded brake shoes are built slightly O/S in order to "arc," or grind them to drum spec. for proper contact and are not built to be installed "out of the box."] I'm also surprised that with today's liablity issue's you found anyone to machine the drums past the discard dimension. "B&C" phone is 206.622.5655