All right, is there any good 5/16 fuel line anywhere now?

I think you mean fuel HOSE when you're calling it "LINE". Line is normally hard metal line out of steel, copper or aluminum. Also, ALL of the Gates Barricade hose has green type on it, whether it's the fuel injection hose or the the ethanol resistant hose. The standard Gates fuel hose has white writing. Does it SAY rated for fuel injection, or did you just assume because of the green type? They may have had some bad runs. Usually that Barricade hose is good stuff.