When I was kid, long time ago, we had a teetertotter also called a seesaw. We would change the fulcrum point depending on weight of each person. Basically the pin weight will change based on where the wheels are located in respect to the hitch & the rear of the RV and where the weight is placed. i.e. the further back toward the rear beyond the wheels the more it will lighten the pin weight. This why the loads are balaced to give us the proper hitch weight. Obviously adding weight to the extreme front or rear will have a greater effect. How the axle handles the load is another matter.
