Hey guys, i just finished putting my 92 skidoo mach 1 back together. Got it started today, decided to get it off the trailer and bring it around to the driveway. I let it warm up on the trailer for a few minutes then rode it off. It seemed to be ok until i hit a decent hill. The sled would bog, even if i tipped it to the side like if i was clearing the track and hit the gas the track still wouldnt spin. i hit the kill switch, and pulled it back off before the engine stopped turning and it started to accelerate. I got it to the garage and was thinking maybe it was because the air box was off? There was a little popping comming out of the pto carb.