[jsb5717]

Makes sense. You did your homework because you wanted to be safe. Sadly, the numbers are one thing...real life experience brings more to the story.

Your loaded tongue weight is likely more like 900-1000 lbs so I do see a mismatch in your setup that can cause a little fish-tailing in stronger wind (or semi suction). A heavier duty hitch with appropriate sway contral may help. That is, if your truck's hitch weight capacity is adequate

Edit: Using GVW numbers for calcs: Vehicle 7000 + trlr 7800 = 14800. Depending on how you load, in addition to the tail being over weight I would say you don't have enough hitch or truck to tow comfortably. Again...JMHO