I guess the first question is what type of hitch do you have? My understanding is that an Air Ride Hitch and Air Ride Pin don't mix. Also are you running air bags? We have an 2011 Chevy Extcab Dually and a 2012 36RL and the only problem we have is on some of the bridge joints that we get some extra bounce, which I think some new Bilstein shocks may help there. Other than that the RW rides pretty smooth. Yes watching in the mirror you can see the RW riding up and down on the hitch air bag.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top