Ever had self adjusting brakes overtighten?

rustycowll69 said
they weren't exactly "upside down". The shorter spring wasn't seated in the hole properly. It was halfway out of the hole and rotated somewhat.

You know, I bet you're right. FSM shows spring in center of the hole, hooking the peg from under on a 10" rear ('70). The OP's picture shows the spring below the hole and leveraging over the wheel cylinder.

An 11" left rear..........