It's late, and Im tired, and might be missing something.... BUT
Your first section says truck combined weight (front and rear axle) is 7325 lbs (3525 steer, 3800 drive)
QUOTE First the truck is a Ford F-150,2015,supercrew ,3.5 ecoboost,4x4,max tow, 157' wheel base 6 speed,3.55 electronic lock, integrated break controller power mirrors, GVWR 7050, GCWR 17100, tow capacity 10700, steer axle 3525 drive axle 3800.END QUOTE.
Are the above axle weights actual weights or GAWR?
Then, after you loaded with wood etc... and presumably hooked up the trailer, your new weight is 6860 (3260 steer and 3600 drive).
So, how do you load up, hook up trailer, and lose weight?
Did I miss something in the explanation?
As stated by others
1) Weigh truck loaded less trailer. Get steer and drive axle weights
2) Hook up trailer, WITHOUT weight distribution setup (get steer, drive and trailer axle weights)
3) Hook up WD bars, and get steer, drive and trailer axle weights.
Then you will know tongue weight, how much tongue weight is being distributed and where.
Mike