My left steer tire is 4 months old, and the right one is 6 months. I had an alignment done at a truck stop 4 months ago. The left steer has a little wear on the inside edge, and the right one has a lot of wear on the outside edge and will need to be replaced soon. I went back to the truck stop and asked why there was so much wear when they did an alignment just 4 months ago. He said they only do a toe alignment, and I need a camber alignment, which they don't do. I've called 4 shops that specialize in alignments, they all say they don't do camber alignments, and I should just come in and they'll look at it to see what needs to be done. So, do camber alignments exist? What do you recommend?