Mushy brakes 4 life...

I’m positive the “brake drag” I felt to adjust the drums was really the backing plates rubbing. I think the shoes were miles from the drum in reality. I think once I fix the backing plate clearance issue, and run the shoes out... I’ll be good to go. I hope and think.
LOL, I hear that, frustrating for sure....
It looks like that backing plate took a little "real world" abuse service-wise over the years, not uncommon, may need a little TLC massage here & there. BTW, a lot of the
aftermarket stuff doesn't come finish machined to spec, every single pre-owned Tundra done for the dealership My co-worker & I have had to machine the park drum
section "lip" of the rear rotors down at least 1/8" to prevent them from rubbing the backing plates before installing them. I prefer OE Toyota ones, but the $$$ & how deep
they are in the deal usually dictates which ones go on.................