Rear camber adjustment

[J persons]

The right rear tire on my SHO is showing some minor inner tread wear, so I dug out my trusty caster/camber gauge to see what I was working with. The right rear has .5 degree neg camber, and the left has .75 degree neg camber. I had the car aligned several years ago when the replaced the toe links. All the bushings appear to be tight with no movement. Should I attempt to correct the left rear for the .25 camber difference, and is there a toe adjustment for the rear wheels, and will a camber change affect the toe?

 

[SHO-moco]

Lift the rear wheel off the ground with a jack under the spring seat then try wiggle/wobble the wheel. The rear upper control arms have a rear bushing assembly that decay, the aluminum housing around the bushing literally eroded away on mine. And they are a real joy to change.