Has anyone noticed rust and flacky paint on the back box at the tail pipe of the exhaust. I Bought my 52 plate Astra Club what a shock I found when I looked under the car and saw the rust . I had to rub it down and paint Hammeright on it .After talking to my mate he looked at his Astral an 02 plate and it was rusted through to a hole.Has anyone else noticed the same problem ?.