I have an odd rattle in my left hand shifter/brake. The unit is a 2001 Dura Ace STI shifter and brake unit. I installed it myself. The noise sounds like a barbque igniter, kind of a high pitched ting. It only occurs on rough roads at high speeds. I am pretty sure that I tracked it down to the brake cable as it enters the shifter. The brakes work fine but I guess the cable housing is either not all the way in, or it is hitting on something. Does anyone have any ideas, or know of a picture diagram or schematic that shows how the cable housing should contact inside the shifter?