As mentioned, many rv's can be improved immensely with after market products. I finally bit the bullet and bought sway bars for front and rear. I already had the front end aligned, added a safe-t-plus steering stabilizer and built an electric trim for it so I can compensate for cross winds or crowns. Also adjust the ride height which is getting the air pressure in the bags at the correct level helped. It now tracks like a go cart. Passing trucks don't budge me at all now. Before it would wear me out trying to keep it in my lane on a calm day. Oh and some have spent over $100 each for shocks. I have the stock ones. With less than 15K miles and the current great ride I plan on running them till they wear out.
Myron & Deborah
08 HR Endeavor 40 SKQ
2012 Ford Edge Limited FWD 3.5L
Aluminator tow bar, Demco base plate