I recently purchased a 2015 Expediton XLT EL, coming from a 2008 Nissan Armada. I tow a Sunset Trail 26bhs camper that weighs 5500 dry, and I use a Fastway E2 WDH with Trunion bars. Making no adjustments to my WD bars or hitch between vehicles, the first several times I pulled the camper I...