This is where I'm going to start tomorrow.

I know for a fact the pump was functional as it ran a few days prior. I locked the STOP lever in the off position while doing a piston soak and rebuilding injectors. Now it acts as if the STOP lever is still in the off position although it is not.

As far as my previous governor issues, it wasn't the governor. The previous owner had cranked up the throttle stop to get the car to idle. Once I backed it off, it wouldn't maintain idle (bad misfire... injectors were trashed) but would rev snappy and not hang up.

If the rack is moving, I'll do an internal pump soak and pull/clean the delivery valves. Based on how it is acting though, I'm pretty certain it is something just stuck due to being held in the STOP position for days.

We'll see tomorrow.