I have the Wagner HVLP Conv. gun and the two quart pressure pot. My question is what should the pressure settings should be at the pot regulator. I know they say that #40 at the compressor and around #15 at the gun but what should I set the regulator on the pot at. I'm new to spraying and I am trying to get my settings straight. Also what do you do with the check valve that usually goes to the gun mount pot from the gun.