old guy wrote:
a wdh will increase you tongue weight capability. most hitches will have a tag on them telling you what the limit is with and without the wdh.
I don't think this is a true statement. WD hitches do not change the tongue weight. They just redistribute that tongue weight among the available axles. If your tongue weight is 1400 pounds with a regular hitch it will still be 1400 pounds with a WD hitch. It will just be carried by different axles but there will still be 1400 pounds on the ball.
The only solution to the OP's problem is to move some weight further back in the trailer or move the trailer axle further forward.
I could be wrong but I don't think so.