Can I weld my cam bolts?

Did you tighten the LCA's while in the air? If so poly bushings are settling or rubber bushings are tearing. LCA's should be tightened at ride height or you will fight it forever
I can't remember. I will loosen them, and tighten on the ground. But I know that I did the uppers while on the ground. Not easy.
Will jacking the car up on the lower control arm, and loosen, and re tighten be the same as on the ground?