SOME VEHICLES MAY EXHIBIT A NOISE FROM UNDER THE DRIVER SEAT WHILE DRIVING THE VEHICLE. THE NOISE MAY BE CAUSED BY VIBRATION WHEN THE BENT-UP END OF THE BALANCE SPRING (A) INTERFERES WITH THE SLIDER BUSHING (B). TO ELIMINATE THE NOISE, THE CLEARANCE BETWEEN THE BALANCE SPRING AND THE SLIDER BUSHING HAS BEEN INCREASED.