I was at stock height with the Koni's and no rocking. I've never had rocking symptoms with any combination of springs, shocks, pads. etc. You have to open up "drill" the bump stops and dust covers for the larger rod the Koni's have. I didn't cut the bump stops. After lowering my car and driving a while I removed the Koni's to cut the bump stops they showed no signs of bottoming out so you don't need to cut them at stock height or lowered unless your lowered a lot. The spring pads, in reality, give very little adjustment and are for "fine tuning" the height. I got the rear of my car too low and stacked the spring rubbers but the spring was almost outside the cup. Bad idea. I didn't leave it that way for long. The Koni yellows were perfect with the stock springs and stock ride height in my car. If your rocking, something else is going on and I don't know what it is.

Les