KDXMM823,
You dont HAVE to do anything to your bike! But...please read above posts
from canyncarvr and BRush and at least have a look at what there talking about. Your bike will get nothing but better!! In my situation, my bike ran
much better after leaning the jetting from stock! The stock kdx is not even close. Summer time only makes it worse.
Not trying to lecture, just hate to see you miss out on something I know you will like. If after reading you still dont want to try it, hey its your bike and if its fine for you, I'm cool with that. :cool:
Steve