[jerryhawthorne]

Mark, not any way has been posted successfully to "flatten" out those tennite bezels. I had one that had bowed out in the middle almost 1/8" on the top. It looked awful. I did mix some epoxy up and tinted it with some Pactra model paints to get the color right. I used masking tape on the outside and inside of the edge to make a dam. Applied the epoxy in the dam and after a couple of days drying I sanded it flat so it fit against the wood well. Not perfect in color but looks a lot better than having that big noticeable gap. You could probably try the same approach to fixing and filling your crack.
Good luck, Jerry