Fuel pressure problem..I'm at a loss.

Sounds like you are draining the lines and it just takes 1/8 to empty the carb dry.
It will run WOT for as long as I want it to after I get out of the throttle it will run just fine for about an 1/8 of a mile before it looses pressure and dies. It also seems heat related as if the motor is cool it doesn't seem to do it.