Jetting at higher altitudes will be leaner than jetting at sea level for any given machine. For jets, numerically, the number corresponds with the size of the hole. For example, a 160 has a smaller orifice than a 180. Your jetting does seem really fat, as dust n' u suggested, unless you have more internal work done. That almost seems like you have big-bore jetting... You should be closer to a 45 pilot, NCVQ needle on the third clip position, and a 168 main. That should get you in the ballpark, unless you have other internal mods that a previous owner installed or something... One quick trick that I like to use is to pull the choke in whatever area you're trying to diagnose. It's just a quick and dirty way to see if you're rich or lean. If it runs better when you pull the choke, you're lean. If it runs worse, you're already rich. Good luck.