P11x

Hey everyone, I just picked up a 2013 ML350 Bluetec and its been great! The previous owner just replaced the air compressor and 1 leaky strut, I have however noticed a strange issue when the car is parked in Sport Airmatic mode. It seems to sag a bit more on the passenger rear than the driver side rear (lopsided a bit) and both rear sides sit too low - it only takes 30-45 minutes for it to settle after being parked. The strange thing is in comfort mode or raised mode it doesn't do the same thing and stays perfectly leveled without any sagging.

I've seen a few people mention it on the forums but no solid answer on how to rectify as its isolated to Sport mode only.

Any tips would be appreciated.