Welcome Newbmike,
I have the answers you are looking for...I live in Colorado, have two 07 800r's that are pretty dialed in, and ride Breck and the surroundings areas.
1. You most likely did not hurt your engine running you MN settings in CO, no doubt you sled probably performed like crap out here, with about a 30% horsepower loss. If you think your sled felt broken since you last rode and you rode here, thats why. Truth is you were running rich, and not in the powerband due to clutching. Typically you run rich to break in a new motor, so you should be fine.
2. I jet my stock 800r at 470, you should order a set as well. My RKtek 14.6 comp head runs nice at 450.
Now for clutching.
Option 1. Your stock sled probably has 415 ramps. You can pick up a set of +1 oversize rollers to compensate for the altitude. These roller run about $70-80 and will add 2.5g to your pin weight, I ran 11g pin with these for a total of 13.5g
Option 2. (a better option) change your ramps to 417. and around a 16g pin weight. This ramp is better at altitude.
When you are out here. Don't ride alone, ride with a beacon, probe, and shovel; if you have a spare day, do avy training! Keep in mind in doesn't take more than 30 degrees to slide. I have already had one friend buried and recovered this year.
Good Luck.
Thanks, that was one of the most helpfull instructive things ive read on this forum. As for the elevations MN is Minnesota and its around 800 ft and Breck is Brekenridge Co and its between 10,000 and 12,500 ft. The clutch cover says it comes stock tuned for 2000 to 8000 and says it could damge the motor if i ride above or below that range. So far ive done both. ive put about 100 miles in Mn and 50 in breck. I live in Minnesota so i almost have to get it clutched before i jet it. Could i have done any major damage to the engine?