I saw something recently about the Giant, they used a battery heat shrink (bhs) in the chimney tube to fill up the tank, then put the pole of the atty inside the bhs before pushing it down and screwing the bottom on, then pulled the bhs through the top (you've got to take the drip tip off of course), said it worked perfectly for filling the tank completely, should work on any Kanger, need the right size bhs though.