The other day when I finished the camber on the rear wheels I jacked the rear up to move it and align it with two straight lines. When I was moving it sideways by pushing on the top of the right rear tire, I felt movement in the tire side to side. I looked down at the axel stub connection when I moved the tire and saw the stub moving up and down. I removed the jam nut on the axel and checked to see if the axel nut was tight, it was. Anybody have this happen? If so what did you do? The car has 0 miles.