Hard to be sure from the pictures, but in your first picture, it looks like the bag seals on the roof's top right, and the right vertical side, are kaput. They look like deflated balloons - basically an empty canvas tube. The canvas tube should be filled with a length of foam, which puffs it up, or inflates it. The seals on your roof's top left may be a bit thicker, but still look pretty empty. If you poke the seal with your finger, or squeeze it in your hand, does it feel like it is filled with a nice flexible foam? It should.
In my first picture below, you can see how the bag seal has the same thickness all the way across the roof. The thickness is not zero, but is enough to fill the gap. Maybe an inch. In the second pic, you see the upper shell's bag seal is also an inch thick, and has the same thickness across the entire height of the shell wall.
Do a forum search on "bag seal" and you will find a lot of info about what they should look like, and how to fix/replace them if they need it.
Bill
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