Stupid water

Ok so out doing some riding yesterday around the creek nothing crazy or deep, maybe and inch or so above the floorboards for a 5-8 foot run and of course I got water in the belt housing. I just assumed that it being new that everything would have been sealed up properly but that wasn’t the case. I know i need to seal the outer housing properly but my question is do I need to pull the clutches and seal the back side also or would just sealing the outer one be sufficient?