Major amounts of sqeaking comes from my upper rear hatch when driving over a bumpy road and it is less thatn 70 degrees out. When I raise the hatch to its limits it squeaks, but not if I squeeze the metal frame and glass together with my fingers. Is the glass seal suspect? I rode in the back and checked to see if it was the inner palstic trim making the noise by pressing on it but it did not make a difference.