First off I've done more alignments than most people do oil changes. They should ALWAYS check front and rear end for bad parts before aligning they necer should have aligned it if its moving. The ball joint moves the tire how could you know if the cam bolt was needed (see what I'm saying). Rear cam bolts are more common than you think because camber starts to go negative or time from the springs starting to sag. Moog number K5330 or a 14 mm cam bolt. Ironically if you were worried about handling the negative camber in the rear is perferred for better cornering. I think your alignment techs were just being lazy.
