Outstanding work, Zack.
BTW, those end wall standoff steps make dandy vertical handles on big, heavy rolling doors.
Uncoupling, or cut levers have vertical grab handle ends, need to be mounted on a car end bottom so they can rotate and have their opposite right angle ends pull this type coupler's lock pin straight up from the top.
Newer couplers push their locking brackets up from underneath, are not affected by weather as much.
I've yanked a few on the ATSF.