I noticed last night that I have a small "chip" broken out of the rear side (13035+A) right on the seam where the two pieces come together. At work now, but can post up a picture when I get home. It's in a spot where it would be impossible for me to have done it by dropping a tool on it or something ... no clue how it got there, or how long it has been there. Car has been running fine, though today is only the second day I have driven it since before winter. If there is a break and a piece missing at the top is it anything to worry about ?