I just replace the rear springs.

Prior to replacing the rear springs I had sag of almost 1" on the left side of the car.

Now I am about 1/8 - 1/4" lower on the left (front and back). Only noticable if I measure the ride height at the fenders. Before I could see the sag in the window of a store when I pulled up.

I suspected the rear left spring was weaker than the right.

Once the springs were out, on the bench it appeared that the right one was in fact shorter.
I am pretty sure that the rear springs were original.

I know that the front struts, mounts, and springs were replaced within the last two years.

I then looked at the position of the strut mounts in the shock tower.

Noticed lack of camber on right side. About 1-2 degress on the left.

This is what led me to believe :
- the lack of camber on the front right of the car may be due to the angle of the strut
- the shallow strut angle is holding the front right a bit higher than the left, which in turn causes the rear left to sag a bit.

The front right strut is against the outside rear of the hole, while the left strut is almost centered, but a bit biased towards the rear.

Keep in mind the angle of the shock mount...sloping in toward the motor (at about 4-5 deg???). Could this be the mysterious 1/8 " if the right mount is more to the outside by 2" with respect to the right?

Has anyone heard of a shock mount with 4 holes? Is it common to use the wrong combination of holes which results in this situation?

I think that I am going to rotate the mount and try different combinations to see what I get.

Proper alignement after that!

Hope I have been clear.

Thanks