I dont know much about fuel lines and fittings. I bought a new fuel line and was told it needed an adapter to a 1/4 NPT. to attach to the fuel pickup on the bottom of my tank. Neither the attachment that came on the line, nor the 1/4 NPT fit on the tank. I know I need a male fitting, but the 1/4 NPT seems too big. Anyone know what size a 1953 CJ3B tank should have? Thank in advance.