From what I've read this past week-end we've had 1 near lean sieze and 1 lean sieze from NOT JETTING UP IN COLD WEATHER. You might as well just wipe your ass with 100 dollar bills if you are gonna toss away money by doing that. Be NICE to your engine , Bump up 1 jet size minimum do some test runs and look at the plug. You'll be a happy RIDER because of it...