This winter the hardtop has rattled predominately rt sided at the region just behind the doors. Cleaned the rubber margins, lubricated same, also the locating pins. Had it to the dealer and an indepenent shop without permanent success. Lubricating shuts it up for about 5 miles and then it progressively worsens. Is there any mechanical solution? such as adjusting the clamps. Did a search without much success. Any ideas ?.