Well, I re-tightened all of my screws, and I had to use a slight variation on Erik's tightening method to get my chassis as flat as I could. There was still a tiny tiny bit of uneveness. Unfortunately I took off the front bumper so it was easier to read my ride height gauge, then the car became uneven again
I should of written down the patter I used to tighten the screws
I never knew how much care was needed to get a good setup.