Which makes more impact on sway

Thanks for the comments... I was putting away my new registration papers today and came across my scale sheets from last year...

Front axle - 3280 lbs (3750 lbs max)
Rear axle - 3680 lbs (3850 lbs max)
Truck w/trailer hooked, but trailer off scale - 6960 lbs (tongue wt - 700lbs)
Truck + trailer - 13,500 lbs
Truck unhitched - 6260

I see this as my tongue wt is less than 10%...here's my "sway problem". I have the capacity to load my cargo in the front of trailer, thus increasing my tongue wt...can I also lower my hitch ht a notch?

Thanks for your thoughts.