Hi Katya,Just a thought. I only got two Gold ones, so my experience is hardly statistically significant, but I'll share it anyway--with the disclaimer that it's based on a very small sample. My first Gold carto worked OK but the draw was very hard and the filling prosess was slow. The second carto was pretty much unvapable--almost no airflow. The filler was wrapped so tightly around the coil that I literally couldn't get any air through it. It burned after just a few very labored puffs. So I took it apart and actually measured the size of the filler--2.1 cm x 5.3 cm. The interesting thing is that the filler in the Drip style carto is about 5 mm taller but 1.3 cm SHORTER than the filler in the Gold carto with the same construction (2.6 cm x 4 cm). I think that the Gold cartos I got were simply overstuffed. I believe that shortening the length of the filler by 1 cm or so might solve all the problems.
I love the loose filler in those DT 510 cartos. Br5495 noticed (in another thread) that "the air holes in the threaded fittings are larger than usual. Most are smaller than a #60 drill bit. The holes in this one are the same as a #58." This fact may also contribute to the wonderful airflow I'm experiencing with the Drip style 510 cartos.
Hmm the air flow is what's puzzeling. The device that your using, is it a custom machined adapter or is it an actual 510 fitting imported? The airflow is very significant as it will make the cartomizer burn. We actually did over stuff them with a tighter woven silk to be more absorbent.