I do not use them for the wing connection. I use the metal screw together connection. Color coordinated, silver, gold and red. They do not take up much space and they make a great seal. Be careful not to pinch the lines when you push the wings on. If there is too much slack in the line, they will kink inside the wing. Don't leave a lot of excess line. Less is better. That's how my set up is done.
Paul