Just bought a new Winnebago Sightseer 35G and have noticed that when driving, you really feel the bumps and rattles. Now I expect that because it rides high, I would expect some bumps and not a totall...
Having drove truck for 20+ years I found one thing that helped me was to "not fight the wheel" by that I mean don't over react to every twinge/sway/wiggle of the coach. Use a lighter touch on the wheel. So what if it wiggles around a bit in your lane.