Thanks for responding! What I will do is measure the line pressure at a full tank, and at empty tank, and see if there is a difference. I will let you know the findings, but it may take a while since I need to rent the gauge.
Anywho, I really appreciate the quick response. I actually saw the same regulator and thought it was for the previous models to mount of the rail, but I see I am wrong. Doh.
Thanks again for all your hard work on this, this project rocks