I have a 4.8is with air ride on all 4 corners. Recently BMW replaced both front struts and I noticed that the compressor has been kicking on every time the car starts. So I raised the air ride and jacked the front end up. I sprayed everything wit soapy water and found the culprit. Where the air line feeds into the strut there is a bronze nut. The leak is coming from around where the nut seats into the plastic housing. My question is, since my struts are less than 2 years old, and still under warranty, do I just need to tighten that nut or does the piece need to be replaced?