I'm not sure if my v-brakes on my '04 Mt. Fuji are working right. They make a grinding noise, like the pads are made out of sandpaper. It's the kind of noise I'd expect with mud in them, but it happens when the bike is clean. It seems like it becomes worse the longer I have to use them to stop. The best word I could use to describe the noise is "Shhhshhshshhhh". I've read stuff about brake squeal, and adjusting breaks, but nothing has described this noise. I just want to make sure it's not actually grinding on my wheel rim.