Ford trucks seem to have a higher bed rail height than other tow vehicles.
I tow a Reflection 303RLS with an F150. Pin weight is OK with Max Payload truck suspension.
I can trim my truck to a more comfortable ride with the Airlift bags, but this lifts the front of the trailer by a couple of inches, loading the rear trailer tires more than the front.
What would fix this (and there are similar comments on this forum from F250 and F350 owners towing larger GD 5th's) would be a way to lift the trailer suspension by a couple of inches above the axles.
This would be simply spacer blocks and longer U bolts. I have no idea what Lippert would think of this . . . but this is a GD-to-Ford tow vehicle concern . . . so I think this belongs to GD.

GD perspective ??

Rob