Whenever I am scooting forward at a stop light with the brakes lightly applied, the car kind of wobbles forward like the pads are unevenly worn. When slowing down on the highway, I get a big wobble similar to warped rotors. The rotors are only 30,000 miles old so I can't imagine they'd already be warped. If I were to just replace the pads, how do I ensure the pads don't do the same thing? Just inspect the slide pins and boots and maybe add a little grease? Any insight is appreciated. I try to ignore it but it gets pretty irritating.