I took a test drive of a model X and I found wind noise a bit excessive coming from what appeared the drivers rear view mirror area. Studying TMC.com I have seen many people fix this issue at the service center, and others that just complain that wind noise is bad. Are there any conclusions about this ? is windnoise a design issue, or is it a manufacturing issue that can be addressed at the service center ? I ask cause I want to make sure what to expect once I get my X. Thanks!