Does anyone have a source for thin walled black rubber tubine? I want to use this in a clunk tank and the tubine needs to be very flexible. The standard fuel line has a fairly thick wall, this would be used in a smaller tank around 4 oz so the lenght of tubing inside the tank is short. For glow fuel Sylanvian (sp?) has thin walled silicon what I need is a similar diesel tubing with the same flexiblity. Any thoughts?