Just got a 2011 250 six days late last month. I'm riding at 800-900 feet above sea level and the temperatures have been 15 to 30 degrees F. I left the pilot jet alone. Needle is in middle position. Put a 180 main jet in and turned the air screw about 2 1/4 out if I remember correctly. Bike runs perfect!
Here's a picture from New Year's Day 2008. This coming new year I'll do it on a GG. I love winter riding!
