Not wanting to hijack this tread, but being we're on the subject of alignments, what makes a vehicle wander to the right or left, not both, just one or the other?
OP, when your kind of vehicle gets an alignment it should be a 4 wheel alignment, not just the front.
Is there a difference between a 4 wheel and 2 wheel alignment?
Yes. The vehicles that have four-wheel independent suspensions or an adjustable rear suspension require aligning to the front wheels. The front end 2 wheel alignment only aligns the front end. If your car has a solid rear axle you can usually choose the two wheel alignment.