Is the seal picture upside down its hard to determine? Your seals
need 303 wiped on them so they slide on slide body and not pull.
The Styrofoam could be a loose piece of foam caught in between slide and wall.
You may be able to see if you
remove a wood panel.
I would add to your list and let Newmar take care of it the gray seal looks like a inside seal that's lifted off inside area of roof.