Looking at my brand new Aspire Atlantis, it's making me wonder. The "Rook" shaped cuts in the tube part of the tank prevent me from filling all the way to edge. Also, the entire metal part that holds the drip tip has no juice capacity. It almost makes me think that Aspire purposefully limited the Atlantis to 2ml so that they could come to the market later with a 4ml version "upgrade." Any thoughts?