i honed and rebuilt the master and rears on my 1951 6400. fronts were way beyond rebuild. the master and the rears had some pitting but it honed out and so far has not leaked and the brakes work okay. it is just a yard truck so no highway speeds, never gets out of second gear. i used the old oily brake pads and they do grab, but she stops like i ran her into a tree. see the pics in the link below.
