Hello guys! I need some advice on a noise with my tw, the motor is perfect, no noise ,starts first click . I have done an oil change (motul 3000), and it has a good service history although it has 45k (kilometres) on the clock . When I'm riding, and I go into 5th gear, there is a whining noise. all other gears, the bike is quiet. Any advice or help on this would be great. Thanx!!