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...
If this is a new MH I would have the alignment checked also. Don't know about Winnebago but Forest River will reimburse the new owner to take it in and have the alignment done. Along with adjusting the sway bars I have found that keeping my water tanks full helps to stabilize the MH if I know I will be traveling in windy conditions. I highly recommend the CHF, it works wonders.