My issue was from the truck bed sides being too tall. Built my own riser. I started out with insulation only, but there was too much flex with the weight of the camper. I added the wood frame shown in the picture starting with the 2″ even all the way around, but the camper sat closer to the bed side top at the rear than the front. I then tapered the wood and the insulation from front to back and now everything sits even and clear.
Tom
Sacramento CA
2003 Eagle Cap 850 Camper
2019 Ram 3500 SRW 6.4 L Gasser
