Jim,
My Majestic is mounted using the "magic box" latches from MK. They are tedious to install, but the do work nicely. With the latches, I use guide pins to secure the rear of the pan to the fuse, the boxes a couple of inches forward of the gear, and then a single screw at the front of the pan for my peace of mind. I'll get some pictures of that when I get my Majestic into the shop for maintanence.

The area which you describe as flairing is held in place on our airplanes by the mountings which are very close to there. It is a very very thin spot in the belly pan at that point and really flexes a lot. I recommend a conservative bit of carbon fiber matting layed in place with epoxy, then mount the pan and tape it so that it conforms to the needed shape and let it dry. This will fix it into position nicely. CF will work much better here than fiberglass. Just run it so that it covers the gear exit a little bit and then grind it flush with the Kevlar after it dries. You may need to unscrew the gear for that.

Mark