This may seem weird. But I'd like to see if this has happened to anyone or if someone knows what i'm talking about before a take it in. Lately for a month or so now, in the back passenger side i've been hearing a chirping kind of sound from the roof. The faster go, the more constant it gets. I then noticed yesterday that a roof rack screw is missing, on the side where the noise is coming from. So before I buy a new one I was wondering if this could be causing the problem? Thank you! !