so i took my shee out tonight to ride around in the snow, i rode for about 15 minutes then let it sit for about 20 min. it was snowing and it was about 22 degrees, when i got back outside to start it took me about 5 minutes to get it started, when i acutally got it going kept making a backfireing sound of like alot of pressure of straight air and my throttle became really really sensitive. As soon as my finger woud touch the throttle it would rev, and i noticed in the morning inside my exhaust tips looked kinda like white paste colored....new to the shee any help would be greatly appreciated