Hi ,Mark is your man for this, but first under the bonnet look down at the steering box, on the side facing the engine you will see a threaded screw with a locknut, crack off the locknut to release the screw, then turn the screw in say half a turn then re-tighten the locknut, once this is complete go under the wing and you can see the output shaft from the box with the droparm attatched, well get a hefty hammer and hit it in toward the box this will re-allign the gears inside the box then try driving the van, if there is still to much slack try another quater of a turn but remember to hit that shaft after each adjustment, oh and dont get over eager as you wont keep the van in a straight line if you over adjust it
