Just changed sprockets and chain on my 07 crf450r. new JT sprockets, Parts Unlimited o-ring chain. Went 2 teeth up on the rear sprocket 13/50. Im getting a weird noise now that wasnt there before. Sounds like its coming from front sprocket or chain. Almost like a buzzing sound or constant clicking when riding. No noise when sitting still and idling. Can here it really good when going slow. Put the bike on a stand and cant recreate the sound. Chain is adjusted correctly and lubed, the chain is not hitting the case because theres no marks. Everythings torqued correctly. I didnt know if this was normal for o ring chain. With stock sprockets and non o ring chain (that was streched out) i had no noise, didnt know if the o ring chain needed to break in or seat right. Racing next weekend, any advise will help.