Rummaging through the forums and finding information for little fix's to my GU4's loose steering I found out how to adjust the steering box. Now my roll is kept in good nic and my steering components and bearings are pretty good. So I decided to give this adjustment a go. What a difference it made, all of the steering vibrations virtually disappeared. These vibrations were really horrible at the Patrol 80's and when cornering. I did however have an alignment and balance before doing this. Little adjustments at a time until the steering was a little tight and felt like it was on rails, then backed it off until it felt nice and crisp just like a car.
May not work for everybody but sure as hell fixed my Patrol. Brilliant!!