when I did my car, I went by the factory service manual where it said to take the measurements from the pivot area on the control arm to the lowest point on the ball joint to the ground. I think the difference between the two was supposed to be 1 7/8" +/- 1/8". Once you get that, you are supposed to "jounce" the car (I think its a form of bouncing) the car up and down a couple times to get the car to settle. I held onto the front bumper and did this. It took me a couple times of doing it but I finally got it dialed in only to take the car for a ride and have to reset the adjustment again.