Any of yinz gus notice that when you go to fuel your plane, whether your using the fuel filler tube or pulling the tube off of the needle valve, that when you insert the metal fitting, it slides out. I use a hand pump and it never fails as soon as the fuel starts flowing, the valve comes out and glow fuel shoots all over the place!!! Well, I gotta fix for that. I have some small spring loaded clamps that have rubber on the ends. I insert the valve and then administer the clamp over the tubing thus fastening it to the valve. The tube don't slip off and you don't get fuel all over the place.

Dave...