Thanks for your answer. I do have a gauge and the fuel line keeps pressure. My car runs well but a little rich running the Kirban statically (without vacuum). I performed a vacuum check on the regulator today and it bleeds down completely in about 1 to 1-1/2 minutes, so I am assuming the diaphram is gone.
__________________
1990 Mustang GT, Holley Systemax, GT40X, B-cam, 24lbs injectors, Pro-M 80mm, 70mm PP TB, BBK LT w/X-pipe, Magnaflow catbacks, Baer, Eibach, Tokico, Walbro 255lph, UPR subs/uppers/lowers, 31 spline Mosers