If it's the "china doll" engine, you could customize a carb for that elevation, and bring a spare for everything lower. Since it's so easy to swap carbs on the china kit engines, that is probably the best solution.
Originally Posted by xseler
Well, I found out that my bike absolutely hates 9000ft elevation. Didn't think it was gonna start --- ran like poop when it did. Never did get the carb adjusted to where it was acceptable. Decided the bike won't go to the mountains anymore.
With this in mind, I think that a question we should ask a 'newbie' is "what elevation do you live?" when they post that 'won't start' thread.