howdy, I'm running a 2009 Skandic SUV 550F here in Yellowknife, I'm told, and it makes sense, that the machine is adjusted to operate at sea level. i'm off to the mountians next month and will be sledding in the 7-8000 foot range. can anyone offer any advice of what adjustments have to be made to my sled? i.e. carb and/or clutching? thanks.