What I do mate is put the rear of the car on axel stands put a jack under the rear beam where the spring sits and jack it up about a inch then undo the 4 16mm bolts at the top of the shocks then lower the jack down. Then the springs are loose. Either wind the adjusters all the way down or unbolt them and remove them if you want it really low. Then do the same in reverse to refit. Hope this helps it's a easy job and will take less than a hour