Re: Too much fuel, not enough air.
It sounds like you moved the clip the wrong way. When moving the clip UPWARD the needle drops down leaning your fuel . Another thing , once your plug has gone black it won't come back to a lighter color. You'll have get a fresh plug . If you have leaned it to the TOP natch and plug is still running black then its time for you to JET DOWN . I mit be wrong but , as I recall most It's come with a .70 jet. So you'll be needing a .68 jet IF I'M CORRECT ABOUT THE STOCK JET SIZE. SICKBIKEPARTS sell single NT jet reasonably priced and then a response on shipping well let's just say the rocketshipper's.
"RIDE IT LIKE YOU STOLE IT"