Is anyone using the unit without the hose, filling manually? I'm just setting mine up and having some trouble properly installing the rubber stopper and washer at the bottom in order to prevent it from dripping from the valve. The rubber washer doesn't exactly fit inside the cap, do I put the rubber stopper in first and then screw on the cap? Where doe the rubber washer go? Can anyone help me understand what I'm doing wrong?
 
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