I am having a problem with the driver's side buttress. When you press down on the 'pin' which locks into the deck lid, the side of the canvass top is supposed to automatically side down into place. The passenger side works fine ... but the driver side is no longer sliding down automatically ... I have to push the canvass down with my hand. I will take in it in for service work to get it fixed ... but has anyone else had a similer problem?