You don't jet a bike the way someone else does...or the way someone else DID that 'ran it in the mountains'.
Jetting is going to be a process that you do with your bike, in your area. A good place to start is to find out what's IN it in the first place.
In any case, there is no jetting recommendation that would be worth diddle without knowing the mods done to the bike. Even the method you use to oil your filter is going to make a difference....so the best person to figure it out is YOU.
Power loss at 11k feet? A LOT.
Clean your air filter. Get a new plug. Do a WOT plug chop. Check the color of the plug to determine the main jet effect. Change to suit.
Check out:
http://justkdx.dirtrider.com
<tech tips> <carb tuning> to see a chart that will give you a guide for elevation changes.