On the magnahelic, I'm showing .17-.18. I've got the damper fully closed...so much so right now that I can't even tighten the screw down because the damper slide is in the way. And the flame definitely seems a little agressive...like a little lazier would be better. I've screwed around with the combustion fan settings with minimal results. I've got the auger plate lifted, so I'm now getting good flame and heat, but I feel like dropping the pressure a couple notches would be preferable. Manual says 0.15 - 0.17. Any input is appreciated.