Mine had a bog around the 65 to 75 mile mark. It really seemed like a backshift bog, or lack of backshift. Was most noticeable when diving off of the packed trail into deep powder. When the sled would start to slow and I smashed the throttle it would bog. Blip the throttle a couple times and it would come to life and stand up. I took the secondary apart and polished all of the bearing surfaces. I can't claim it helped because the next ride was different snow conditions and I couldn't replicate. Then later when the snow conditions were similar, I had no bog, but was also over 100 miles. The further I got from the 80 mile mark the better it has run. Last ride was deep snow and no bog all day. So I am not sure how much of it is the sled coming out of its break in too much oil too much fuel, or if cleaning up the secondary was key. I just know that it RIPS now. Also, I have not had the update re-flash performed yet.
