Like I said your still 160 lbs light in the front, and only transfering 60 lbs back to the front and 40 lbs to the TT..
I would set it up to transfer another 100 at least.
With my light suspension I had to add 7 washers. The guy before me with a 3/4 ton had 5 in the hitch.
Plus his truck was higher so when I installed on mine I had to lower the ball mount...
I linked your instructions too for your WD. Says restore equall front and back. But its says up to 1" lower in back is ok...
You will still have plenty of tounge.
I get no sway with 420 lb tongue at 9.6%
