Spacer under camper - manufacturer "approved" solution?

I agree with Reddog1 that magic43 needs angular truss bracing or a solid vertical crossmember from side on edge 2 X 6 to side on edge 2 X 6 under and secured to the top camper support 2 X 6 at both ends min to prevent racking which will only get worse over time until disaster occurs. Will also give needed support to the TC floor in the center areas. Angular truss bracing would still allow for some long item storage in the riser depending on the TC's design.