We took our new to us 2009 SP189 to the Oregon Coast for ten days. We used both the queen bed and the sofa. Is there a way to get more support for the sofa as a bed. Our TT has a slide. It seemed to not have enough support on the fold out side. What do you guys use to give more support and what is good to give a little more cushion to the bed. We used a yoga pad to kind of help with the crease in the middle but it still was stiff and not very comfortable.