[strat61caster]

Where's the corner balance numbers?

Find a shop that's experienced in corner balancing and adjusting camber plates, sway bar endlinks etc. This shop does not appear to be able to take the care needed, if my car came back with camber plates that different and an significant difference in camber I would not go back, that would be a red flag for me.

I would assume that the erraticness is due to the crossweights being wrong, a corner balance should work wonders.

Edit: Talk to the guys when you drop your car off, understand what you're paying for and what they will and won't be doing, I would not be surprised if you just dropped the car off for a basic 4-wheel alignment, they left the front camber alone zeroed out the toe and called it a day. (Although you did get a lot more camber in the rear when you picked it up, toe does affect rear camber the way it's interconnected I think)

My money is still on corner balance.