Hi atwowheelguy,
I like your spreadsheet. Good for you sorting this out and good way to see the differences.
What size WD bars does your hitch have?
The toy hauler varying loads and varying truck bed weights for sure play into the WD settings. The toy hauler with varying toys even complicates this more.
I have found on a normal TT, which is then fully loaded, and the truck fully loaded, if I dial in the WD to be dead on, and the trailer height is level or slight nose down, that I can varying bed weights and or trailer tongue weights by at least 100 to 150# and not need a WD adjustment. BUT, there is always a but... This is when the nominal tongue weight is near 1,200# and I'm using 1,200# WD bars. This is on a 3/4 ton truck suspension.
On my current camper, I have a 1,600# loaded TW with 1,700# WD bars. I can vary the tongue weight or bed weight but a little more then the 100 to 150# like I could on the 1,200# settings. This is on a 1 ton truck suspension.
I would expect if I dropped down to a 900# tongue with 1,000# bars, the swing of weight would be less then the 100# to 150# on a 1/2 ton truck.
Point being, there is a relationship between the loaded tongue weight, the loaded bed weight, the size of the WD bars and then throw in the actual truck receiver and the truck suspension, 1/2 ton, 3/4 ton and 1 ton.
You can find that sweet spot to dial in the WD dead on for nominal loading with what you have. But the spread of weights until you need to readjust may not to your liking. You may need to try different chain links on your existing setup or find a 1/2 chain link/clevis that you can add/subtract to your chains when you need a little more or a little less WD from the varying loads and not deal with the head tilt. This is easier then doing a whole hitch head reset, but will take time to create the combinations.
And a thought, they do make fully adjustable chain tensioners. The Pro-Pride hitch and the Hensley hitch have them. The Pro-pride chain tensioner may work better in your case as the Hensley has more strut things associated with it. They may be a little expensive for 2 of these, but it is fully adjustble
https://www.propridehitch.com/propride-3p-weight-distribution-jack/After checking the Hensley, it is cheaper bya little. It just has strut attachments you would not use
https://hensleymfg.com/product/arrow-cub-jack-assembly/Hope this helps
John
