You will have 'problems' if any of the following is a 'problem':
1. Bike won't run very well (it won't run very well in the best of circumstances at that el.)
2. You don't have a good number of spare plugs.
Using CDave's elevation correction chart, at a given temp for which you are correct at sea level (say 160 for an
example), you would want a 148 for 10,000'. I used a .92 correction factor to get that number. I didn't bother looking for the 94 stock jetting. I'm not saying you
have a 160 main.
Your pilot will drop a few sizes, too.
Check
here for some good colorado jetting info.