GL "wallowing" ...
I haven't looked into this yet but I'm pretty sure you have to change the shock/damper with the air spring as a unit. So, it can get pretty expensive to get the "crispness" back.
Also, "body roll" is more a function of anti-roll bars and spring rates. The shocks will inhibit body roll a bit when first turning in but then the AR bars and springs do the work of minimizing body roll. Do your air springs maintain height when the car is parked or does it droop low? If the roll is suddenly excessive, you may have a bad AR bar mount or bushing.
On the downside, sport mode leaves the ride quite brittle. Honestly, Mercedes' chassis tuning prowess is not really the equal of BMWs. BMW does a much better job valving their shocks across the board.
- Mark



