I don't know anything about that particular hitch, but based on your description and the measurements you posted, I think you need more tension on the spring bars.
The fact that your front fender measurement with the W/D hooked up is still higher than with no trailer means you're not transferring enough up to the steer tires.
Back when I had a TT, I adjusted it so my front measurement was the same if not a slight bit lower than when un-hooked.
This is good for ball-parking it, but as others will probably add shortly, you should get to a scale to see what is really happening.
If this system is anything like mine was, the more spring force there was, the more sway control it provided.
