318 Retards Under Load?

Looks like the gas is alright, at least, there's no water separation. Vacuum is on the timed port, still (passenger side of an Eddy 1406). Once I find a T fitting, I'll throw in another fuel pressure gauge. Replaced the rubber line at the tank, it looked alright.

The big reason I tore into the motor was the fact that whoever put it together last time used some really crappy hardware, seals, and componentry, not to mention the wiring horror I sorted out, it was already in the plans when this oddball problem came up. I figured that if tearing it down didn't make it disappear, I'd figure it out after.

Didn't replace the distributor, I'll take a look at the timing tonight. It seemed like a fuel deal to me, as letting off doesn't make it pick up, but getting on the accelerator pump does - but the regular fuel flow seems ok, just going by the inline fuel filter.