Mushy brakes 4 life...

The 11x2.5” finned rear drums shouldn’t overlap the backing plates. If yours do, you’ve got a problem. Same with the axle stand off and the green bearings, you already know that you shouldn’t have to run a washer as a spacer.

Almost sounds like you’re running SBP axles re-drilled for BBP instead of actual BBP axles, the flange offset is different. Or Moser axles with the SBP offset and 5x4.5” pattern.

Sure. I hope you know the washers are simply to diagnose what’s bound up or not in line. Very much a shop fix. This is a B body rear and B body axles. Not anything A body. Your backspace advice and conversations were spot on by the way thanks for that. The drums have a recess in them that for sure goes over the backing plate where it sticks in 3/16 or whatever. Hell they may not be the correct drum for these. B body plates. Just going by what I was told. Ha. I really appreciate it guys. I think I’ve got to figure out what I’ve got going on for drums, wheel and master cylinders. They are rock auto specials with tiny little 7mm bleeder screws... which I wasn’t wild about. I don’t know if I should trust them. It’s getting harder and harder to find US made brake stuff. Unless I’m looking in the wrong place.