Have a fuel problem which appears to be water or crap in my main tank. Motors starve and shut down; I switch to the aux tank and it's all good. Does anyone know how the fuel lines from each tank are run? There are two lines from each tank going to the two tank selector valves. I'd like to know if there are actually two lines from each tank or is there one line with a "T" somewhere? I really suspect the tank but I'm trying to eliminate all other possibilities and of course avoid cleaning the tank.