[Richard]

Dario,

Have you had the rivet inspection performed? On some coaches, that piece of aluminum that you are pointing to is a contiguous part of the lower skin between the slides. It can shift upward like that if the rivets have sheared.

Also, if the slide bearing blocks are worn down, broken, or missing the room will ride low causing what you pictured.

And someone just buffed that coach! Nice and shiny!