I have a 12 800 etec with about 1100 miles on it and love it. Last Sunday I was riding in the bighorns in some pretty good powder and the sled would vary in rpm's really bad. I bought a RB clutch kit but have not yet installed it. But was wondering if adding prefilters somewhere might help this problem. As soon as I kept the front end up out of the snow it seemed to run good again. Just wondering if anyone has experienced the same problem and what they did to resolve it? TIA