Question for the guy's with duallies and big campers

The AF996 loaded on the rig in my signature works like a charm. We can handle mountain turns at the posted speeds without any white knuckle handling characteristics. The Hellwig Big Wig sway bar was a great help and towing up steep grades with a 14' trailer still yields about 11-12 mpg. Custom built camper guides bolted to the bed keep the 996 where it's supposed to be. Out on the open road cruising about 65 will give us around 14-15 and crosswinds haven't been an issue.