UPDATE - so we got a new truck. The new truck trailer receiver is about as high as the Jeep receiver. Bought a new 11" drop for the weight distribution hitch, but that proved to be too low - we bottomed it out a few times on our one and only trip with it. A bit of searching and we found a lift kit for the camper from eTrailers ( https://www.etrailer.com/Accessories.../LC270682.html
). Note, they have sets for square and for diamond axles. I chose to do the lift myself, I made a couple of rookie errors that lost me style points but it all ended up coming out fine. I re-routed some water lines to keep them above the axle also. We could then use the original 6" drop and everything is far enough off the ground now that we feel a lot better. Two more trips out and no bottoming out problems. Note - you will need to get a torque wrench, the kit calls for 120 ft-lbs of force, and had I not had the torque wrench I would have assumed it was 'tight enough' well below that torque value.