Keeping in mind that no one likes to make a second trip, and technicians aren't always accepting of their errors, I am also in favor of throwing this back on your alignment shop. I have two shops I use. One is my main tire supplier, who has one of them high-falutin', computer-analyzer-with-beams-n-all-sortsa-complicated-crap racks...and a technician running it who looks like he was born seventy years before the first PC hit the market. While they are very good at getting the car to track, they have never left my steering wheel perfectly straight--and I just hate that. My primary alignment shop, which still does front ends for under $40, has their alignment jigs set over a pit in the floor (and never tells me you can't set the camber on a 240), will often take the car back out on the road twice or even three times if they don't have the wheel perfectly centered. They have a neat set of shop-made tools that clamp to the wheel and can be set to the dash or the seat to hold the wheel level while they do the tie rod final adjustments. 'Nuf said.

DS