I finally found a juice worthy of filling a carto (yay!). I filled a Boge 510 carto, hoping that I could use the large eGo cone that came with my kit to finish off the look. However, there is a flange about halfway down inside the cone that prevents the carto from sliding down through to screw onto the battery. Am I doing something wrong? From every description I can find, the cone is supposed to fit over all 510 atomized cartridges. I have ordered some of the short cones that just cover the outer battery threads, but was hoping to use the taller cones that match the battery. Thanks to the wise ones in advance.