I reached out to the dealer just to see what they would say. Came back with 10,500 pounds, which is certainly NOT what the guide says, which is 7000. But since they knew that they were unwilling to do the digging required to see what the true difference was due to, they just gave me an answer...
I had them on my 2018 set at 1.75. It was the perfect height (slight rake) and never settled that I noticed. But to be honest they were a bit stiff for me. But you will find that opinions vary widely on that. I now have a 21 with very few options out yet.
If you notice the footnote in the guide, it limits the tow tech to 7000#. I did not notice it and I am fairly in tune to those things. And it is a real issue for me. The dry weight of my boat trailer is right at 7000. I don't pull often as it is stored at a marina. But when I do its a 2 hr trip...