I have copies of the weight tickets for the truck before and after my belongings were loaded. I was not present for the weighing, however. I suspect that the truck was originally weighed with very little fuel, after the initial weighing, the fuel tanks were filled and then the truck was weighed with my belongings.
The interesting thing is axle weights on the before and after tickets:
Before After Difference
Steer Axle 7,100 9,200 2,100
Drive Axle 9,300 10,520 1,220
Trailer Axle 16,400 19,720 3,320
It seems to me that if the difference in gross weight was totally due to the weight of my belongings, then the difference in the weight would almost exclusively appear on the Drive Axle and the Trailer Axle. However, if the change in weight was due to filling up the fuel tanks, then difference would primarily be recorded on the steer axle.
Is my analysis correct???