You have to take the weight off the suspension to make a camber/caster adjustment. Otherwise when you try to move the LCA bracket, your lifting the weight of the vehicle.
My lift is pretty close to level.
Just eyeballing it I'm gonna have to shim the car level on the driveway. My turntables are about 1 1/2" thick and might be about the amount that's needed. I couldn't raise it enough to get the turntables under in on the lift.
Here's a link to someones page with a picture turn plates like mine. Mine are as ugly as these but they still move.
I have had these for many years but do not have a use for them. Very handy for checking vehicle caster. They need to be cleaned up but they still move freely.I checked the motion on the turntables and