My sled has an exhaust bog when I stop in deep powder then attempt to go again. The only way to make it run is to reach down and clear the snow from the exhaust. Could this be tps or just normal? 2013 800 pro 163 9000'-1100' elevation. Tki belt drive geared 2.25. New plugs didnt help. (Did this before new belt drive also). Otherwise stock. Snow is very deep right now and this is getting aggravating. Any help would be great