If your RV suffers from the tail-wagging-the-dog type problem, you should install a rear track-bar. I did and the track-bar almost completely eliminated the big push the camper would get from passing semi's and from strong gusts of wind perpendicular to the vehicle.
Your RV should have air-bags to help the suspension. If they and the tires are inflated correctly you may need to check the front-end alignment. Shocks and springs should be OK in such a newish RV.
I've only driven the one RV I have, so I have nothing to compare it to. Mine may handle like a dump-truck, but I don't care. Adds to the fun.;)
Mark, Jean, Paul & Lizzy (the mutt, RIP)
1997 Fleetwood Southwind Storm 34LS >
Thirsty, noisy & clunky. She ain't pretty, but she sure is fun!
"Aerodynamics are for people who can't build engines." Enzo Ferrari