I have a quick question - what are the two holes in the edge of the deck for? There is the air hole in the middle, then there are two small holes either side of that
I am talking about these two holes at the edge, here they are near the juice channels but they can rotate into different positions if deck is adjusted:
They are open to the underside, through two slots:
But this area is then screwed down tight into the base, so they are not for airflow. And I don't think they are related to juice, because they go inside the base, not outside into the tank.
So I don't understand what these holes do? Actually, they are more like 'slots' than 'holes' - they are cut outs from the edge of the deck.