I just purchased my first BMW, a 1994 318ic (already wishing I had some more power). The rear plastic window has a white crease where it folds when the top is down. Is it possible to polish that out? The window is zippered in, so is it possible to replace it without replacing the entire top?

The (power) door lock on the driver side will not work with the key and I have to lock or unlock the car from the passenger side. The knob goes up and down fine, but it doesn't seem like it is attached to the key lock mechanism. Any ideas? Is it difficult to pull the door panel to take a look.

Last question: Should I replace the water pump. I have been reading some previous posts about pump problems.

Thanks in advance,
3350