Hey guys I have a 2007 RMZ-250. I've got about 65 hours on the bike and 20 since a new top end was put in. I need a spark plug for it (the current plug came with the bike) and according to the ngk website as well as every dealer i've talked to the plug (ngk ir CR8EIA 10) doesn't exist. That doesn't make sense to me since I have the plug in my bike now. Anyone have this problem and know where to get a new plug? Also the bike seems to run rich in the cold or something. It smokes quite a bit during warm up but as soon as i get into a hard moto the problem goes away. Maybe my slow jet or fuel screw is off? I don't put gas in it that is more than a week old, anything less than 91 octane, and the bike only smokes in the cold.