One other thing.. IF the RV is new, not used.. Odds are the drive can be improved (I know mine was greatly improved in it's 2nd year)
If it's used. there is a chance the improvements have already been done.
What improvements?
Some RV's rock side to side like fans at a rock concert swaying side to side in time with the music.
Sway bars stop (or seriously limit) this
Some RV's "Wag" like the tail of a dog, usually with the nose moving one way as the tail moves the other.. Track Bars or Pan Hard Bars (Same thing 2 names) stop I do not mean limit I mean STOP! this.
Steering stablizers work to help keep you on the straight and narrow.
They work good too.
I have a Davis (roadmaster I think) trac Bart and a Blue Ox Tru Center stablizer.. The RV came with decent anti-sway bars so I did not upgrade them.