I have an 87gn and the metal piece that is below the windshield is rubbing against the glass and squeeking real bad. I have noticed there is a [looks like a thin piece of film] under that metal piece and was needing to know if that film came from the factory that way [anyone else car have this?] If not what causes this and how do you stop the noise? I have had a new windshield installed and that did not stop it. thanks