I have a 1997 Outback with 160k miles. Since I've owned it, I've replaced both front calipers because the pistons seem to have hung-up. I thought that would take care of my problem which is that the driver's side always seems to be wearing much faster then the other. Also, when I had the discs turned, they commented that I had some overheat damage on one of the discs. I lubed the slides but what more can I do? Even now after you drive it a while, you can feel more heat coming off the driver's side disc after you stop. Also, I seem to have a slight shimmy of the steering wheel at speed. Are these issues related? How do I correct the brake wear part?