Hi! Remember that I asked how to fix a rusty spot right in the middle of the flat area behind the second window in the left side and where it could have come from? On the 306s, there are inner fender (correct word? The area around the wheel.) made from plastic installed around the rear wheels. On my car, one is missing. We've seen that only today looking at the rear bumper. Now here's the question: For what kind of work does this part need to be removed? Obviously it cannot just fall off, so I want to figure out what this car has been through. Tobi