I have a 2010 assault and it drifts left when going wide open on snow that is set up. Can't find anything wrong with suspention. I do have SLP exhaust and was wondering if losing weight on one side will cause this problem. Rode with one other assault and d8 that said they were noticing the same thing. We were riding flat land in ND. Didn't notice any thing wrong when we went to the mts. in Dec. Any input is appreciated.