i have never really had a problem with the belt slipping on my bike until this year, we had a really wet ride and the belt ended slipping bad at the end of the day. i have never had to use the drain plug before and when i pulled it seemed like it was full of water. after that i layed off the deep water and it happened even just riding in the rain, i took the cover off and checked for any cracks and it looked good so i put it back and and seeled it with some rtv. the next ride it happened again, i dont know if the water is comming in through the vent in the top or if perhaps isnt seeling right on the drainplug(the o-ring is still in place)

any way, im wondering what i could do to waterproof this a little better, is it possible that the belt is just getting old and in need of replacement?

 

check the hose connections .one behind the back plate to air box and the one to the belt housing.

 

THERE ARE ALSO SEALS BEHIND THE PRIMARY+SECONDARY CLUTCH AT THE REAR BACKPLATE.....................