when i wash my kx100, i usually use a waterhose with a tip on it or something, but after i wash it, it wont start...and yes i keep the exhaust plugged, but the other day i took off my seat and side panels and noticed that the top and right side of the airbox are open, so i am thinking that when washing of the inside of panels water went through, passing through the air filter...and so on.......i have a twin air filter if it matters, any suggestions??