I use safety wire on my fuel line as a hose clamp very cheap and easy to do I think I have a picture of my clamps in the carb post. I use the 0.031 stainless safety wire. To make it work you have to pull it snug then twist it and there is a special little wrist action twist to get it really tight but I can't explain it, I'll have to get Bob to video me doing it.
Norman
Norman