My mission to get my GP Mustang 40 of the ground hit a snag today when I tried to run the engine for the first time. The engine needed a lot of priming even right after it had just ran. While the engine would start and run with the needle valve cranked out 4-5 clicks at any throttle setting besides idle seemed to me like it was fuel starved. I am also losing some unburned fuel from where my Pitts Muffler and the cylinder head meet which will need to be sealed with some red RTV. Either my low-end needle is WAY off ( I have not messed with the factory setting) or more likely it is the location of my fueler I have mounted it on the bottom of my plane to hide it. The fuels line are running down to it form the tank about 3" and then back up to the carb about the same distance. My thought was although it would need to be primmed once started that this set-up would work just fine, but maybe not. There is enough room to mount the fueler on the right side of the firewall between the 2 cowel mounting blocks. But I was wanting to get some advice from some of you guys before I stared un-doing stuff. I am using a Du-bro #205 fueler and at SuperTigre .51 with a Slimline Pitts Muffler.