Your weights sound good. I'll bet you a case of beer that your truck weighs at least 8500 pounds which puts your fiver at just under 14000. My 05 F350 SRW V10 is just over 8000 with the hitch on
and my front axle is only 4400 pounds with the V10. The PSD adds over 500 pounds of weight and the dual wheels have to add a good chunk of weight as well. Ford Superduties are heavy trucks.
Take care and safe travels.
Don & Donna
Vancouver Island
2005 Ford F350 V10 Lariat CC 4x4 LB SRW 11200 GVWR
2006 Montana 2955RL
click on the little pic to see a big pic