before you just start throwing parts at it, i.e. air springs, diagnose the problem specifically!! Could be a leaky air fitting, a split hose, etc! Diagnosing problems correctly is the hard part. Fixing is easy. Look at the system, and figure out by process of elimination what the issue is.

__________________
Dave S.
Northeast
2003 4.6is
2005 E53 4.4
2003 E39 Msport(a REAL ONE!)
1959 Fiat 600