starting to re-jet what I think is a 01or02 kx125 so I figured I would begin at stock jetting. The bike was running fine but fouling plugs at a high rate so I figured I would use Spanky's guide to see me through. The air screw was out about a1/4 inch out but I wasn't sure how many turns this was so I turned it all the way in and backed it out 2 turns to begin. Bike fired ran and fouled a plug but when it ran the choke was on and it idled abit, then the idle went high, I turned the choke off and the idle slowed then went high on its own- I turned the screw out until the idle went down(at least 2 more turns out from 2 out) then began playing with it when the plug fouled. I cant get it started now so I have decided to put it back to stock and start from there. Apon looking at stock specs(my jets are not numbered) The difference between the 01 & 02 are different. Anyhow my question is: Does anyone know how to find the year off a VIN#? The sticker is missing off the steering head but the #JKAKXRLC31A022577 remains.