Load leveling air bags for '12 AC 4X4 V-6

What Shawn said. I put the trailer on, then inflate to get it level and firm. If the ride seems too loose, I add some air. I haven't needed to put anything more than 20 psi when my 19' Rpod is on it with full tanks and propane and the dogs in the bed, so I doubt you'll have to add more than that, esp with the WDH. I don't run a WDH, but then again, my trailer's on the lighter side of the spectrum (hitch weight: 390#, GVW: 3200# wet).