It might be the "O" rings in the connections between hose and shock and hose and compressor. .. maybe a handful of dollars and 45 mins of your time....
'05 Mada LE Slate, Bilstein 5100s in front, R1 Concept Premium Drilled and Slotted Rotors, PosiQuite pads, Removed middle row center console
, 8K HID Lows, LED on order with Armaden
, besides these she's just about bone stock