Can someone please help me diagnose why my brakes make a clunk noise and vibrate a bit when I apply them at slow speeds (5 - 7 mph in stop and go traffic?) They work great under all other situations and the pedal feels solid and consistent. Both front and rears have 30% left and I was planning to replace them next month. My FJ62 has 111k miles and has been a solid performer to date. Any help or suggestions would be greatly appreciated. Thank you for your time.