I have a JVC El Kameleon head unit in my 90 maxima, and when i installed it where the bose HU use to be it occassionally makes a clicking almost rattling noise. It sounds like some gear inside the headunit is rubbing againt the screw holding it to the harness. It doesnt happen all the time but it does it enough to annoy me? Maybe the screws I used to screw it into the harness are too long?? Anyone have any ideas or have had this problem??