Bit of a rant about single-piston calipers used on mid-sized and big Mopars

I find that with hi-mileage units, the pad anchors get hammered, and then the pads get stuck in them. I also find that corrosion occurs in the o-ring grooves of the slider pin bores. And then the friction here is stronger than the seal-retraction. I also find on high mileage units that corrosion occurs in the grooves where the square section o-rings are, and this pushes the o-rings hard against the pistons, and seal-retraction is reduced or eliminated.
Some guys grease the pistons prior to installation, to help slide the pistons in. But this pretty much eliminates retraction, cuz the seals do not deflect at all;instead, the piston slides right on thru, and never comes back.
If everything is working right, I just run my front bearings a tad loose, and knock-back takes care of it. And before anyone jumps on me about this; go jump in a lake; I've been running slightly loose front wheel bearings, on all my vintage cars, totaling nearly 5 decades, and have never even heard of replacing them. Not like the crap cartridge bearings on modern strut cars, whose bearings are many times larger and go up to maybe 5 years.
It's nice to be able to slip it into neutral and coast for a mile. That's just one of the tricks I used, to get over 30mpgUS from one of my combos.