Something we forget in these days of Independent Front Suspension and McPherson Struts is WAG
Your motor hone is on leaf spring spsennsion this means the body can mnove (Slightly) side to side relative to the axle .So imagine if the front moves left and the rear right, You think you are wantering toward the center so you compensate, then the ends swap How you think you hare headed to the ditch and you conmpensate. Like a dogs tail waging side to side.
Another issue is sway.. Like fans at a rock concert swaying side to side holding their bics
Three improvements you can make on MANY motor homes 2 on most all
1 Sway bar, Helps control the Rock Fan like side to side rocking.
2: Trac bars Front and rear two of them stop WAD dead I mneanb 100%.. One is often enough Most folks say do the rear firest
3: Steering stablizer I went with Blue Ox Tru-Center as when I got it it was the only one you can "Re-center" from the drivers seat Now Safe-T-Steer offers tha as an option,