I read where some of you in this thread used fueling valves, bulkheads etc....., The way I set my application up using the OS 91 FX as my power source and the Perry P30 for pump. I am using two lines only, with the tank on the CG and one in-line tee between the tank and the pump, I connected my fueling/defueling line to the tee and let it hang out of the cowling, roughly 2 inches, the vent line from the tank hangs down through the bottom of the cowling allowing me to catch the over flow if need be when filling. Now I remember someone mentioning a concern of flooding the carb. The trick to keeping the carb from flooding is to simply shut the barrel all the way.

Cross your fingers everyone, weather providing this eve is the day mine makes it's first flight. Test ran the engine last night in my driveway. Even though I had it tied off on the tail I make it a habit to stand in-front of the horizontal stab and to my surprise I walked away with bruises on my calves where the stabs met my flesh, talking about a stump puller.

I managed to get an extra 400 rpm from the OS 91 FX by swapping out the stock muffler with one off a magnum.

Blackie