I was wondering if anyone had any advice about improving the ride for passengers in the rear belted seats of my old MoHo. The ride is uncomfortable and nausea inducing on all but the smoothest and straightest of roads. I have considered changing the foam to a firmer type, but that would make the bed a bit hard in places. I wondered if those car-seat lumbar-support kits would fit the bill. Any thoughts? I can't be the only one to experience this problem.