Same here on a 2007 Classic. I looked out the side view mirror and it was dragging on the ground. I really hate bashing Airstream on quality issues, but sorry, they deserve it. After inspecting the trim, it almost looks like it is fastened to the track with double sided tape. What a great idea! Hats off to the person who thought of it and to all those who approved implementing the brilliant idea!
I may use stainless steel metal screws and washers to put it back on, I'm not sure yet. I need to search around and see what others have done.