Mine has a bit also, as evidenced by the wear on my 315's.
As far as the axle, if mine is off it is not noticeable with the naked eye. Looks like someone slid around a corner and bumped a curb. You say only 4k miles when you bought it? Makes you wonder who took the hit on the value in order to get rid of a car after only 4k miles. Maybe someone who jacked it up.