So just after an oil change i went riding and the exhaust was blowing quite a bit of white smoke with the choke on. I got going the white smoke stopped and it rode just fine. After coming off the track the airbox was blowing oil out of the bottom of it onto the swing arm and it seemed like there was also some coming out of the breather tube on the bottom. Why is it doing this? I probably need to put a new top end on it soon but should i also do the bottom end so i can replace the crank case seals or would this not being doing this? I have also been told that on start up most CRF's burn a little oil off but this seems like it went through the whole engine side after only putting maybe 2 hours on it. Any and all help is much appreciated.