so, i did a top end on my 2010 kx250f about 40 hours ago and i cant figure out whats going on here. ill start the bike when cold, have the choke on, and it will idle correctly but it will then idle down as if i turned the choke off even when i havent. it will usually idle down within 2 minutes or so. once warm, i can only make it idle either way too high like 3,200rpm or way too low like 1,500. i like to be around 2k at idle but this thing wont go anywhere inbetween. its either super high, or super low. anybody got any pointers? i dont believe its the head gasket but i dont see why it would all of the sudden act like this?