Anyone having problems with mud guards? My driver side rear mud guard seems to be taking hits and pucks precisely at the 90 angle where the mud guard transitions from outside to under the wheel well. Brought it to the Kia dealer who said someone must have hit me. I doubt that was the cause as there was not even a scratch anywhere else on the mud guard or wheel well. I replaced the mud guard on Sep 13th - they come in pairs at $84 - and the new driver side rear mud guard already shows some hits and pucks. I fear that if deterioration continues it will damage the bumper under the mud guard. The car has not been through a car wash, it has not been driven off road, it has not been driven through gravel parking lots, etc., it's driven on paved roads only. Again, it is only the driver side rear mud guard which has the problem, all other mud guards are fine. Suggestions????