Big Problems after Fuel System install

I installed a fuel system in my car with the Aeromotive A1000 pump, filter, regulator, Downs Fuel Rails, and the blue socketless fuel lines. Car has been running perfect for a couple of weeks. Now all of a sudden I turn the key on and the fuel pressure jumps up to 55 when I turn the key on, then it drops straight down to 10. If I try priming it again it'll do the same thing. The car will start and idle, and the needle on the fuel pressure gauge will bounce between 45 and 60. I took the car down the road and as soon as I gave it gas, the fuel pressure shot down to 10-20 psi and the car tried stalling out on me. Im going nuts, what could be going on here? Thanks!

I went over all of the lines and none of them are crimped. It kinda did this out of the clear blue. I have the Ground Pounder intank adapter with the -AN fittings on the ends. Any other ideas? I think i'll try the vacuum line trick tomorrow.