After I bought new our 32' F53 chassis motor home several items were needed to "tame" the beast. First weighed front and back then set the tire pressures accordingly. Second purchased a front stabilizer bar for better tracking. At the same time had a steering stabilizer installed. After a few years added a rear (I'm a slow learner :B) stabilizer bar to "stop the tail from wagging the dog." The last item really made driving in a cross wind not so bad. It's really too bad it took Ford so long to include a front stabilizer bar as standard equipment.
Remember that a motor home is a big sail that the wind will try to push around. The manufacturer leaves the chassis fine tuning up to the new owner as they don't know how the chassis will be loaded.