I have a 93' kx125 that was given to me by my Ssgt. I rebuilt the top end on it. I took the bike out for the first time and it ran fine I guess (my first 2 stroke!) It bogs down low but takes of like a rocket when it hits the powerband. It seems to smoke alot but like I said... my first 2 stroke. After running the bike all day, it started fouling the plug. Now it will start but fouls after a few minutes. If I pull the plug and let it sit, it will start, but once again only for a few minutes. I have tried resetting the float level, moving the needle clip up (2nd from top instead of #3). I have also played with the air screw with no luck. Any ideas?