Going to replace the rubber fuel line that came on my 861 when I bought it. I've seen different routing of the fuel line. Anyone know the correct way? Does it go straight up between the manifold and the engine or does it come out of the sediment bowl towards front of motor, then up and back to to tank shut off? In the parts manual, it looks like it may run to the front of motor and then up. Not really sure. Also, does the line have to be steel and then double flared or can I just use 1/4" copper and single flare? Reason I ask is I do HVAC/R by trade and have enough copper laying around here to do all your tractors! Also thinking of maybe going 5/16" vs. 1/4" for better flow? Good idea? Bad idea? Thanks! Tom