Ok... search for this using my screen name... I know there are some threads which Larry Bible and I put up some good info...
Basically you need to understand that no matter what they print out... if everything in your steering and suspension system is not correct they are pretty much " getting it as close as they can " and sending you out the door with respect to the toe in....
During a summer break from college I worked in a front end shop.. first half as a mechanic and the second have as ' service writer/ parking the cars in the stalls'... LOL...
The guy that did the alignments was old and cranky... but for some reason liked me... I asked a lot of questions and watched him closely. It was also a tactile education being able to drive a whole lot of cars which needed work from the front around through some pot holes and then into the back of the shop... getting to ' feel ' that was very interesting.
If you can't find them hollar...