My rear XTR v-brake makes some HORRIBLE vibrating noises as I'm riding. I appreciate it's where my wheel is flexing as i ride and my brake pad is tacky so it's trying to grip it. I think it's to do with the parallel linkage thing... I mean, I've had the brake for many years, and I can actually feel the movement in the brake pad when I wiggle it with my finger. My question is this - What can I do about it? I'm considering greasing all the links up, has anyone resolved this issue before?