I'm at wits end with this and need a second opinion.
For the past few years by '53 3600 has had horrible front brake screeching, to the point where I don't want to drive it as its embarrassing and terrible to listen to. I've replaced the drums(Raybestos 2008R) and shoes(Napa FLT FT310), new springs, and made sure that everything was greased. It has a dual master cylinder conversion, I even replaced the master thinking that maybe it was sticking internally and causing the shoes to drag.
Nothing has worked. If I clean the brake dust and scruff the drums I can get ~10 miles of quiet driving before it starts acting up again. Any thoughts? I must be so far into the weeds that I'm overlooking the obvious.
