Just a thought on those brakes:
When I converted to discs on the rear of my S10, I kept reading about having to space out the abutment brackets. I never saw what anyone was talking about and mine seemed to go together just fine. A few years later, I had everything apart to install braided flex lines and then I saw what they were talking about. When added to a drum brake axle, the disc setup was off center to the rotor. It was located more outboard so it wore the inside pad much faster than the outside. Anyway, I bought a pack of quality Grade 8 washers that were consistent in thickness, and spaced the abutment bracket so that it was centered over the rotor.
I can't find the pic showing the head-on shot of the before and after, but a few millimeters made a huge difference. It was enough that you could tell in a cellphone pic. The amount of correction needed was more than the thickness of one washer but less than two, so I used a flap disc on a grinder to shave the bosses down a hair to fine-tune the adjustment until the bracket was as perfectly centered as best as my eyes and precision metric ruler could tell:
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