Has anyone with long ez type canopies designed a system to deal with the thernmal expansion and contraction of the plexiglass causing the the frame to raise up at both ends? I probably should have chilled the plexi with ice bags during cure but that was impractical. How much pressure can the frame/plexi take if the hinge/latch system forces the frame into position? Are inflatable gaskets out of the question? Thanks for any help