I just switched trucks from a 1/2 ton chev to a f150. The ford box sides are much higher. I threw my hitch into the back and drove to a couple rv dealers to see about getting it installed. the first said I need to go from the rbw lil rocker to an x16 to compensate for the increased height. the second said no, there isn't a problem. Unfortunately, I don't have a 3rd to check with. Does anyone have any experience with this?