The red flag for me was when you said that you carried your tools in the trunk. If you carry alot of tools, like more than 150 or 200 pounds, I suggest that you make sure that weight is in there when they do the alignment and make sure a REAL front end guy is doing it.

Many chain tire stores have a fancy machine that can do four wheel alignment, but have front end man that is lucky to accomplish a proper toe adjustment. This calls for a real savvy, pro alignment tech.

Good luck,