You forgot that the hitch weight that was on the truck when on the scale is really part of the certified empty weight that CR stated. Assuming a minimum 10% hitch weight, total trailer weight would be around 8500 lbs. So, you have added maybe 700 lbs of gear, water, propane, battery, etc.
Texas Baptist Men-Retiree Builders member since '01
13 Silverado 3500HD D/A, 2wd CCSB srw, custom RKI bed
11 Cruiser CF32MK