No fuel selector valve, only rear tank. Fuel lines look to be OK. Showerhead has been deleted and replaced with just a fuel line with a V cut at the very bottom of the tank. I had an electric lift pump in line that ate itself, probably because some d u m b a s s put 50 amps to it, oh wait that was ME, and I think it was restricting flow. I will now try it without the electric pump and see if it works now.