I have the Saito Radial and in the directions it doesn't say anything about where to hook all the fuel lines...I have one on the side of the carb, (fuel Inlet), then there is one of the open Carb port,(?), and then one down under the front of the engine. I have a tank set up with just the two lines coming out so do I put the vent line on the flex pipe or does it just hang down under the aircraft, and what are the other two, one on the side of the carb port, and the one under the front? Any help would be greatly appreciated...Thanks.