No fuel pressure and Dry Primary bowl

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I'm really confused on this one.  I seem to have a fuel problem. The car is a '68 390 AMX with a Big solid cam, torker intake, ProForm 750 Mech Secondary carb, electric fuel pump, fuel regulator, serviceable 8" fuel filter mounted under the trunk, 12 gallon fuel cell.  Was running fine 2 weeks ago.  Motor has around 100 miles on the rebuild.  Then she started running really rough and wouldn't hold an idle.  Then it killed on me last week and wouldn't start.  Thinking it may be bad gas, I filled up with some racing gas and isopropyl.  Seemed to be getting better. I thought the bad gasoline was now working it's way out.  Today drove to work and back, won't hold an idle.  Have to do the old put it in neutral and keep foot on gas to keep from stalling.  For the trip home I adjusted the idle to 1200 rpms, that got me back.  Anything lower and it stalls.  
Here's where it gets really strange.  Fired it up to poke around (at least it starts), cranked the idle back up and my fuel pressure gauge shows Zero pressure.  My primary float bowl started out with some gas, but dried up as it ran.  Again, as long as the RPM's are above 1200, it keeps running.  Not great but doesn't sound horrible either.  Has anyone come across a problem like this?

Thanks for the help.

This is while the car is at 1600 rpms:

Here is the primary float bowl empty while running:

And the secondary float bowl full:

Edited by tmancusi - Jun/08/2012 at 8:35pm