See my post in your other thread. Go up on PSI and/or change out the rear blocks for the F350 SRW ones that are 4" high and that will help a lot.
'01 Excursion Limited 4x4 7.3L, 214K, Diablo, AFE, Hellwig Sway bar, Procomp Shocks, Rancho RS5406 Stabilizer(bigger is better), V/B. '08 Ears
'13 F350 6.7L CC DRW 4x4B&W Companion, Viair 10007 Air System, Edge CTS, Ride Rites
2016 Keystone Montana 3790RD Legacy Edition