Just went for a burn on my 07 XRS 159 in about 3 ft of pow. After about 2 hrs of steady hard running i pulled out of the deep snow on to the trail and the machine died. I was doing about 20 mph and about 6000 rpm. When i went to try and start it felt a little tight but fired right up again. When i got home i checked the compression and it was 123 pto and anout 110 mag. Did this thing sieze or is there something elase i should look at? Sled is compleatly stock in every way has about 1600 miles.