Wheel aligner is just a measurement equipment, it tells you what it is, but it won't fix the alignment problem for you.
Its important that you always do road test after adjust the suspension of a car.
Note:
1. choose a straight road, no much traffic, good road condition, no traffic light for about 400m.
2. accelerate the car up to 60~80km/h, hand off. see if the car can keep the track straight.
Be prepared, you might can not have wheel alignment done with one time adjustment and road test..
Leslie