Anybody know if Thule makes feet that will connect in the factory slots? I like the way the factory racks attach but they are too narrow to be of much practical use. I have a set of 60" bars and 400 feet with the 242 fit kit that adapts to the roof edges but thought it would be a neater install (and maybe stronger?) if I could use the existing factory mounts for a rack. I could not see this option of their website.