I have a F 450 Ford with a Aluminum Flatbed and a 990 Arctic Fox. My CG is right over the axle, but I still have a problem with the steering and it sets high in the front. I was told that air bags would give me a lot of side to side movement. I also have hitch extension with the spare tire mounted on it and pull a 5 x 10 trailer with a Harley Tri Glide on it. I am going to try and move the spare to the front of the truck and put some batteries between the front of camper and the cab of the truck for more weight in front of the axles.