Ok, something's not adding up at all. You have an F-250? With a max payload rating of 1939 lbs?
That doesn't compute.
It's not a mistype, as in you either have an F-150, or that "1" should be a "2" or a "3"?
My '12 F-250 has a max payload ~3800 lbs (forget the exact number off the top of my head).