Hey BoiseShark, One question that also may help to diagnose your fuel control problem is to know if your car has ever run correctly since you’ve owned it or did you inherit the issue with the car ?
It looks like you have chased down and followed up on most of the suggestions provided so far but it sounds like your warm-up-regulator is still questionable. One test that I’ve used to eliminate a potentially erroneous WUR is to substitute a manually adjustable shut off valve in it’s place. I have found that a brass shut off valve with coupler nuts and a pair of 3/8” in/out copper lines worked fine. With a bunch of hose clamps and a few feet of rubber fuel line you can plumb in your fuel system pressure gauge in series with the added shut off valve. This contraption looks crude, rude and socially unacceptable but now you can manually adjust the reduced fuel pressure that controls one side of the sensing plate in the fuel distributor assembly.
You will probably need an assistant in the driver's seat to help initially get the engine started but by tweaking the pressure normally controlled by the WUR while monitoring the results – you will know if this is where your problem is located. Set your (cold) start up pressure and then gradually increase it per the spec chart as your engine warms up. Carefully check all your connections and of course smoking during this test is not recommended......
Good Luck Michael
