At first I was thinking that it was my springs because when I first installed them, I can see the the rear driver side is a little lower than the other side to begin with. And now my left rear end sacked. A few months ago I decided to replace my rear passenger side shock thinking that it was bad due to a bouncy ride. And A month ago I took my rear suspension apart to fix my rear end clunk and found out that the driver side shock was also going bad( I pushed it down and it does not want to come back up) and that might cause it to sack even more. I don't know why koni shocks went bad so fast, could it be a combination of a bad spring and a bad shock??? What should I do? I don't really want to just throw parts at it just to find out what is wrong with the car.