Is your new truck a 4 wheel drive? Since 2011 there seems to be a race by automakers to see who could make the tallest truck with the deepest bed. I had to buy a 2WD Ford F250 to keep my rig level. My old tow vehicle was an 05 Ram 2500 2WD and I wanted to get a 4WD this time but could not believe the height difference!! The bed on my new truck is 2 inches deeper thus allowing for even less space between the truck and the bottom of the 5th wheel. Some people flip the axles on their trailer or add larger diameter tires to compensate. You can also remove some of the spacer blocks between the truck axle and springs. This will give your truck a more level appearance.