Rob, the pop-up tower was in the very middle of the wash arm. That's what all that 'stuff" is there, why it's not solid cover. Because the rack is so full, I cannot see it, but there should be a "ring" in the bottom rack you load around so as to allow that open space for the tower to pop up and spray water on the top rack. SS tubs aren't available in US dishwashers for bottom of the line machines.