Can anyone familiar with the new Bede BD-4 wing design give me the pros/cons of the bonded design? Is Proseal even a structural adhesive or is it added just to seal the wings to prevent leaks? Is the only structural item holding the wings together the rivets on the trailing edge? I would think you would want some sort of 90 degree bracket riveted to hold the wing rib to the tubular spare but perhaps I am incorrect. Maybe the Proseal is strong enough to hold it in place......