guys your all being overly anal not in a gay way, I was talking to a good mate that works for crescent motorcycles here in the uk they run the world superbike team crescent fixi, anyway he said these little 4 strokes are noisy and metallic sounding by there nature they can take quite extreme abuse , they are designed to be revved hence there power curve is all at the top, as long as you stick to the service schedule and change the oil and filter they will give sterling service.