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full tank of fuel..yep,sound like the way i would have to do it as well.

you running a stock TBI intake pump?

not sure what reg you have,post a pic of it if you could

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I don't have a picture and my wife has the camera with her at the inlaws but this is the regulator http://www.holley.com/12-803.asp

And yes I'm running the stock in tank tbi pump.

I got thinking, what are the chances I got two bad regulators? So I put a pressure gage in front of the new regulator and one behind it. As I said before first hit is 18-20 psi then it settled to 11.5 psi (truck not running so battery getting low) and it held it 23 min consistently feeding the regulator. So I'm thinking the pump is ok.

After the regulator I was getting 10.5 to 11 psi and it didn't matter how I set the adjuster screw(my pressure gage has a pressure relief on it). I called the local all knowing checkers guy and he say's it should hold that pressure just fine and will warranty it again. It wont be here until tuesday

If this doesn't work I think I will go with a bypass style regulator and run the old return line back to the tank.

What do you think?