Aussie guy seems to have it covered pretty good. Not so sure about what he says at the end about lifting the trailing arm a little before tightening the spring plate bolts to affect camber though. I don't see this having any affect on camber. And just to be clear , camber is not in it self adjustable on irs or swing . Camber does change from positive to negative as the suspension goes up and down through its range of motion , a little on irs and a lot on swing cars. So as you lower your irs car , you will get a little more neg camber at your new ride height . You are adjusting your ride height not your camber , the camber change comes along automatically with it . Hope that makes any sense.