I've found my FSW 3200 tows a little different from before diet. Before it would never ever sway, no matter what, with its 1700+lb tongue, probably over 2000+lb
This is an interesting discussion. Weekend Warriors, especially the bigger and heavier ones, were almost always heavier than any brochure weights. They also were the pioneer toy hauler makers and made great coaches.
Go to the scales and weigh your toy hauler and be sure you have 10 and up to 15 percent of the total weight loaded and ready for traveling on the tongue. That goes a long ways in keeping sway from occurring.
Adding 160 gallons of water adds 1330 pounds cutting seriously into your diet numbers.
At 11,300 pounds triple axle weights the tongue weight would be at 13 percent 1470 pounds and that is pretty much empty. However, adding the 1460 scaled tongue weight to 11,300 equals approximately 12,700 total WW weight. And then calculating around 13 percent for the tongue and that works out to 1650 pounds. You might be a little light on the tongue at 1460. And as you load more toys in the back it takes weight off the tongue. Tongue too light equals propensity for sway.
Good luck in however you figure it out.