engine has a light knock in nuetral,but once i put it in gear it is alot louder more so when getting on the throttle. sometimes it sounds like metal hitting metal.according to my honda dealer this is a nomal sound.if thats the case why didnĀ“t sound like that from the get go? the motocycle only has 17000 mile on it and i have had it serviced every 4000 miles.plus i have changed the oil in between.