I have the 2016 Flagstaff equal and Ram 2500 4X4. The truck is a bit high and the trailer rear axle is near it's limit, but I just load accordingly. I have a little over 5 inches of clearance on truck bed. I think the water tank is aft of the axles and if full would probably over load the rear axle. I only travel with 15 gals of water. Dexter does NOT recommend their spacer kit for the axles. They recommended new axles with higher start angle to raise trailer. I weighed everything empty, then camping ready and for now I will just monitor the situation.
2014 Ram 2500 Bighorn CC SB CTD 4X4
2016 Flagstaff 8528IKWS Platinum
2013 Keystone Hideout 23RBWE -Sold