Have 1996 P38 (129000 miles). New EAS Compressor. Overnight air suspension completely drops, more noticeably in rear. Takes 6-8 minutes in morning for system to pressurize/raise suspension, then normal driving operation. Checked lines into valve block for leaks, found slight leak in right front line, fixed -- afterwards problem persisted but only around 4 minutes to pressurize/raise suspension in morning. Recently reverted to longer raise cycle. Where do I look next?