This may be a bit trivial but I'll ask anyways. My 92 did not come with the OEM gas cap. It appears that the door has a place to 'hang' the OEM one but the aftermarket one does not fit. As often as I fill it up I'm always trying to find a place to put that silly cap. Set it up on the roof rack one time and it rolled away on me. Does the OEM have a plastic hanger etc...to retain the cap? ???