Just, yesterday I was driving my 1978 honda hobbit when I noticed it was leaking gas. When I got home I looked and the gas leak seems to be comming the bowl of the carb I took the carb off and took off the bowl and noticed that there is no o-ring or gasket... is there supposed to be one? what could I do to fix the problem If I put some sort of silicone that would hold up to gas that would proably work any suggestions