Rear end bouncing/Equal-i-zer 4-point 10K hitch

As you can see, the trailer's tongue weight pulls ~300lbs off your front axle and adds it to your rear axle. The WD bars return most of that weight back to the front axle, the way they are adjusted.

You probably could adjust the bars to get a little more weight transfer and get the front end closer to unloaded height.