Agree with many here, I had 4 places do wheel alignments and I always get the print out and each was different, only one actually gave me back a car that doesn't pull to either side. And I'm running -1deg camber and mine aren't wearing bad enough to be down to the metal. On a side note, change your tyres asap! If your tyres are down to the belts that's just dangerous for everyone As for what else could be the problem, can be worn bushes. Being ex cop car they could have prematurely stuffed the bushes. Again, any good shop will sort it out. The only guy I use now refused to do a wheel alignment the other day because he found some worn bushes and wanted them replaced first!