I have a 01 S.E.R.G. with 14000 miles. Lately I've noticed a chirping like noise when I let off the gas. It seems more noticeable while the motor is still cool. After I ride awhile it stops. At first I thought a stone in the brake rotor. Then maybe the clutch although it shifts fine. I can't really tell where it comes from other than towards lower front area. Any guesses ?