Hi everybody! I picked up my new 350 SLK several weeks ago. I now have about 800 miles. After I drive for about 30-40 minutes, I now hear a squeak when I am driving under 10 mph or so that appears to be coming from the rear (on the right side?). The squeak gets louder when I accelerate but disappears when I drive above 20 mph or so. Has anyone else heard such a squeak?