Sorry for the noob question. I don't have a lot of experience. I'm replacing the fuel lines and had some trouble pulling off the 3/8 line from the quick connect due to the rust. I was able to get it off and there is a hard plastic o-ring, a rubber o-ring and a clear sleeve (see attachment). Were these suppose to stay in the quick connect? If not, any idea where I could find the sleeve? Would it be easier to just replace the quick connect at the tank?