I picked up an Aeromotive 13204 bypass regulator. I'm having a provlem keeping the fuel pressure up. it will hold 8lbs when the pump is turn on. but as soon as the motor runs the pressure drops when the engine lopes. The fuel returns to block that I made . kindof like a Y block with the center of the Y being drilled out to route the fuel retuning from the regulator.Next I returned it to the fuel water separator filter. The return line is -8. The feed line is -10. I can't return directly to the tanks cause there glassed in and 45 gallons of AV gas is in em. any sugestions on how I can rout this to eep the pressure up. Oh. fuel pump. 1st one was a Holley blue just to test. Next is a Holly 12-150.