There maybe one other option. If you don't care for the look of the 5th wheel sitting on the truck with such a high clearance after raising the hitch up to a level stance. Check the axle suspension adjustment. Most trailers now day can be height adjusted by raising or lowering the trailer axles setting.
The trailer may have been set for towing with a 4x4 truck height when send from the factory.
Depending on your personal ability you maybe able to lower or raise the axle height setting yourself or you may prefer to pay a dealer to do this service for you.
2013 Ford F350 FX4 4x4 PSD
2013 Wildcat 353LS
2015 Day/Nights Camped 5
2014 Day/Nights Camped 29