i ride in the rockies of southern ab as well, my dealer told me same thing. i was thinkin of putting a dial a jet on the carb i can't seem to find one in canada though, my buddy has one on his sled but it's a two stroke. i don't know what to do it's got boat loads of power now, it's kinda like why change a good thing you know.(no one i ride with can touch it any way). where you guys ridin any way? i'm in the pass mabye we can hook up for a ride i've been thinking about going to koocanusa to ride some sand before the dam fills up, haven't rode much in the porqupines either. it's getting good and muddy here now days, going out tomorrow for a ride i'll check my plug some where after a nice big hill. i'll let u know