Guys, I just picked up a certified 125 gallon tank to take advantage of cheaper fuel when I find it in my travels. I would like to hook the tank to my FASS system using an electric fuel tank selector valve with in cab switch. How should I handle the return lines. I have the 2005 model with the intank pickup. I was going to put the valve before the fuel pickup goes into the pump. The system uses the existing fuel return to put the excess fuel back in the stock tank. I need to tap into the return line somewhere to put the fuel back into the selected tank. Has anyone done this and if so can you help me out. ks