Have you adjusted the screw on the engine side of the steering box? It should be a screw inside of a nut. You loosen the nut, tighten the screw the amount needed and retighten nut. You can also add more lube into the steering box. I would look at the manual if you have questions. I added a sway bar on mine to assist also. I am sure someone will jump on here and explain in better detail.

Chris