Going vert, let me know how you make out with the Iron Bay Regulator. I have one I tried in my DP Edge w/ Moki 2.10 with terrible results. The engine would surge badly at idle and bog when transitioning. No air leaks and tried adjusting the needle every way I could think of. I moved the fuel tank back up to the firewall, took out the IB Reg and the engine runs GREAT! The plane takes off nose heavy and lands nose light have to retrim a few times during flight. I would be interested to know if all Iron Bay Regualtors suck or if I just got a bad one. I am thinking to trying a Kline pump next.