whenever i get in some deep powder my sled boggs down. right now it's all stock except for v force 3's and a skins protective gear ultra-q silencer. i took the airbox apart and there's alot of water in it. i ordered the slp high flo air horn intake kit and a 4 inch speed flo rite pre filter screen to replace the speedo. i'm thinking about gutting the airbox. i've been told from other people who have done this that they did not re-jet. any advise? right now i'm running 470 mains. other than the snow getting in my airbox, what would cause the bog? exhaust getting .clogged?