Eventually the tube is outside the fuselage where you can further bend it using the bending thing. I cut mine to length but won't put the end coupler on now. I need to check on whether I need to slid any more grommets or rubber washers on the tube.
I've put one rubber washer in the body side. Am I suppose to put two in here? I don't know. I don't think so. And I put one rubber washer in the tank holding bracket but the drawings don't show this. Just seems like a good idea.