How do I haul a TC while still having the 5th wheel rails?

My last TC required a 2" spacer to clear the cab lights. I made a 1-1/2" x 1-1/2" frame and put 1/2" plywood on it. It keeps this camper clear of the 5th wheel rails. It has worked fine since "02. I also use it under the camper on its dolly when off the truck.