For a XXX4 or a XX4?
For a XXX4, To be honest all you wanna do is lock it tight as you can. Lock it completely.
The kit comes with a wrench, the best way is to remove it from the car, but using the slim wrench you can do it in the car, hard to tighten in my experience , that way.
XX4, well thats an easy one
the screw out the side