I have a 02 VR6 GTI with 30,000 miles on it. While doing a visual inspection of my brake pads I noticed that my rear driver side brake pad is almost gone. The other three pads are thick as all hell. I wanted to know if I could bring my car into VW to have them adjust the caliper under warranty? Or is this easy enough for me to adjust. I know I have to pay for the pad but will VW adjust the calliper. All of the braking system is stock. Thank for any info ahead of time.