I noticed a rattling a while back during highway driving coming from the undercarriage. Almost sounded like something in the rear door. Anyway, did some searching and noticed the rear tire wind guides...you know the things that sit in front of the rear tires and look like mud-guards, but aren’t? Well it appeared that a retention bolt or clip had come out leaving only one hex bolt holding the guide on. This made it flap in the wind and rattle up against the bottom of the car. I checked the other side and it too is the same. I thought it would need the same hex bolt that is still holding the guide on but once I removed the guide it is clear there is some kind of push clip that is supposed to be inserted into the 2nd and/or 3rd hole. Don’t know why they wouldn’t have just included another hex bolt hole but....Anyone else have this problem?