i ordered a yoshi rs-3 full system the other day. i still need a jet kit. i'm going to try to find a 400ex intake boot and rig that up. i have a k&n filter. what i'm asking is that i know that taking the lid off helps a lot with air flow, but what could i do to help keep water and mud out. i know i won't be able to stop it completely but something to help. also, where should i start at jetting? i have no idea about that stuff so any help would be great. i'm between 500-600 ft. above sea level. and its cold, but i don't ride it much in the winter if that even would make a difference. thanks in advance