rear axle left/right adjustment Bull 150

[miatawnt2b]

I bought a used bull 150 that is only about 7 months old, but the previous owner really didn't know anything about these Chinese quads and did nothing to it. The ball joints and tie rods were loose, the suspension was completely out of alignment, and the rear axle is shifted about 1/2 inch to the left. I know how to align and adjust chain tension front to back, but I have no idea how to go about shifting the entire axle in the carrier left/right?
Anyone know how to do this?
Thanks!
-J