The talk about transmission shoes brought to mind the fact that my brake adjustment was near totally used .
I had to remove the rear wheel anyway , so I pulled the brake panel for inspection . I found that my brake shoe rocker ends ( as opposed to the pivot ends ) were just aluminum . They had no hard surface to protect against wear , like most more modern shoes have . The brake actuator , where the rocker ends rest while mounted on the panel , had small ridges close to the tips ( likely left from casting ). Those ridges were cutting into the flat surface of the rocker ends of the shoes .
I filed the ridges smooth and made protection 'clips' out of that hard , unforgiving copper pipe that I couldn't bend for my exhaust pipes . That copper is about 3/32" thick , so I ended up with almost an inch more of adjustment on the brake rod .
Hopefully , the copper will save the shoes from too much more abuse .
I can't believe I didn't take any pics while I had the panel and shoes off .