You have to be patient, make small adjustments, raise and lower and roll the car every time. Following the logical steps and measuring everything a few times will do the trick. You need good, level ground and when checking/adjusting the track you need to place the pads evenly in relation to the tyre/wheel. One thing I did was put a washer on a couple of the screws in the posts so they wouldn't tip over in the slots. Plan on getting a pair of washers for 5 cents - you'll see what I mean. In addition, the plastic screws in the bumpers are easy to screw in, but must remain plastic in order not to scratch the wheels. The digital equalization block seems well done and consistent. The legs are aluminum and are a little flimsy and fragile so be careful.