Well I see that you went through some of the steps but your missing something...............Elevated tweak is different from loaded tweak or when the car is on the ground. When you actually put the car on a tweak board you may see what I mean. 1/4 of a turn on the wrong shock collar will throw the car off quite a bit! If you don't have a tweak board, see if you can use someone else's it will make a difference.