I just got a new Rockwood TT that's some 4' longer and some #2000 heavier.. Still using the same Eaz-Lift WD setup I used with the old Prowler. #1000 bars and the saddles from the prowler transferred to the Rockwood like it was designed for them!
Had to flip the hitch shank from a "drop" to a "rise" because of the higher tongue height of the Rockwood. But, it's still solid towing and have never had any inherent 'sway' to speak of.. Distributes the weight just fine for me and works great.
I'd just hook up the setup you already have and then take it out for a spin. Only you will be able to tell if it's setup right or not. Even all those other fancy WD setups need to be setup correctly to work properly.
Good luck! Mitch