I would like to tighten mine also. The adjustment nut is on the top of the steering gear box in line with the steering shaft. there is no easy way to get to the adjustment screw and jam nut. I recall that the shop manual says that the steering gear box would have to be removed. To do this requires jacking up the engine a bit after undoing all kinds of other stuff. If the adjustment screw with the corresponding jam nut were easy to get to it would be a 5 minute job. I am thinking of cutting a hole in the heat shield to see if I can get to it that way. You can't see it because of the shield. You can feel it from underneath the car.