Pat wrote:

Door Seal:  "...The book still calls out 20 lbs of
pressure for the door seal and after talking to Justin, he is recommending
12-14 lbs, which is where I currently have adjusted my 5th door seal."

Hmmmm...   How LITTLE pressure can one get by with on the P and how much
less on the non-P?  Since I have a non-P, I may as well turn it down as far
as I can while I have some instrumentation connected to that particular line
and easy access to the back side of the pressure switch adjustment screw.
(At least I think it is an adjustment screw.)

Fred Moreno