mike,
that sounds similar to ours, but as it was a new di we did not have to fill it with resin so we didnt have to remove the canister. if you look at the top where the water goes in and out there is only one way for water to reach the outlet, and that is by going up the middle of the cannister, but, as afr as we could see thete was no way that the water could get out of the top as it was completely sealed, i cannot put pics on as i dont have it here , hence the drawing
bill