I bet I am not far from bottoming out the regulator. It is really in there. I went through it and replaced the diaphram, adjusted the valves and put a new set of leak free gaskets. I put it in my first pattern plane (Finesse 120) with a bolly pipe. I set the regulator screw back out to flush and it is way to rich on the low end. I didnt want to have to crank it in again. I fired it up last night with a APC 15x10. I didnt put a tac on it but man that prop was ripping.