I cut out my hatches on my Pygmy Osprey last week and fibreglassed the bottom. I'm using the underdeck bungie hold down system right now. The front hatch has warped and the edges stick up from the deck while the center is flush. How do I take the warp out of them? Heat? Straps? Should I go to something that will hold the edges better, like the Moby Latches?

Charles Robinons