The fuel tank is a three line system. One to fill, most likely a fuel dot, one to carb and one to the exhaust for pressure. I am not sure if I am going to use the fuel dot, third line. I like the Dubro fuel filler, it makes for a nice install and I don't have to concern myself with fuel coming out the carb while filling the tank. Simple enough to close of the third line and not have to worry.

Don't fret it is not rocket science.

Besides you have all of RCU to assist you.

Jim