The center was flexing upward... but were the sides flexing inward? Depending on your construction and geometry, the transition from the sides of your kammback to the top may be a high pressure point. Rather than being a case of the center of the top lifting, the sides may be squeezing in and forcing the top up.
__________________
"Jesus didn't bring 'Natty Lite' to the party. He brought the good stuff."
|