Technical trouble getting my brakes dialed in

That's an interesting thought- how much of the brake fluid is pushed back to the master cylinder by the springs in the drums. The 10 lb residual valves keep 10 lb of line pressure from there to the wheel cylinder, but I have no idea how much line pressure the springs in the drum make pushing the wheel cylinder pistons as the brake shoes retract... I guess it boils down to how far those pistons are actually traveling until the line pressure drops to 10 lb.

I have a strong suspicion that not having that pivot bolt thing on my backing plates adjusted properly is the culprit. When I adjust the front brakes, one of the shoes is probably contacting, while the other is not. When it gets warm enough out to start working on it again, and I have it up on jack stands to remove the transmission and fix the leak, I'll do the procedure to adjust those.

All 3 flex lones are high-quality units from Pete & Jakes.

 

Arnt these unites Bendix style?

 

Huh?

 

This is a Bendix style brake with a floating adjuster . Brake shoes are not anchored with a pin at the bottom https://www.speedwaymotors.com/Bend...MInoC01-eiiwMV2S7UAR2XWzHUEAQYAiABEgKGLPD_BwE