answer. maybe.
when you hook up your WD hitch, some weight on the rear of the TV will be transferred to TV front axle and trailer axle(s).
Think of it this way. you have a full wheelbarrow siting on the ground. when you lift up on the handles, weight (actually force) on the back of the wheelbarrow gets transferred to the wheelbarrow front wheel and your feet.
When you go over the scales the number you see on the scales will be the actual weight on the rear axle, and it will be (or should be) less with WD hooked up, but the front axle weight will be higher as will trailer axle weight. the SUM of ALL the WEIGHTS will NOT change!!!!
Also WD hitch does NOT, repeat does NOT change tongue weight
Now the amount you will transfer is not going to be much, so IMHO if your that close that you need WD hitch to get into spec, your to close.