You don't mention what year your 210WBS is... I had a 2008 and, unfortunately, the jack-knife sofa sat on a plywood box that enclosed the slide mechanism. No way to get rid of the jack-knife sofa without having to re-engineer the slide. I don't know if the later years had the Schwintek slide mechanism (in the wall gearing), that may make it easier, but, you'd best check what is under the sofa before making any changes...