I went to the Rocky Mtn ATV Jam in Utah this fall and had Jorgenson's Honda rejet my 2005 Grizz for the altitude there (11,000 ft ) as I ride from 0-4000 feet in Washington. I kept the old jet for riding in my area. My question becomes how hard is it and how long does it take to rejet? I would rather do it myself. A quick step by step if anyone has it would help. I am mechanically inclined but don't want to mess it up. Do I need to adjust the air/fuel mixture after replacing the jet? How do I know if I get it right. By the way it runs? Any help would be much appreciated as I would rather do it myself.