Hey guys. We bought a 2009 570 in June. It has 100k and new Michelin’s. Rides and drives amazing. My one complaint is a vibratory/flapping/percussion sound. It happens on the interstate when around 70...but it doesn’t happen all the time. Seems like it only happens when the wind is really blowing perpendicular to our direction of travel. I noticed the mechanics left out the push pins on the engine guards, so I put those back in, and problem is still there. I have been all over this thing and can’t find anything loose. Does anyone have any idea? Seems like it’s along the passenger side somewhere. Thanks!