Now i'm certain they're at least not the same revision. The one i have now looks more like the Pbusardo reviewed, and i see the "flavor ring" other people have been talking about.
For anyone who was as confused as I am, here's the differences, laid out for all the world to see (in all of these pictures, the left is the authentic, the right is the questionable.)
Authentic:
Questionable:
They both appear to be the same width, height, etc. sharing a 510 connection.
As you can see, the authentic one has a cap like look to it, almost like a lid to a tupperware container, whereas the questionable one is T shaped, with a tubular shape prevalent in the center.
The authentic silicon sleeve is just that, just a hollow sleeve, while the questionable one is tubular with a donut shape on the end.
The questionable one lacks the "flavor ring", otherwise the coil section's look fairly identical.
Here you can see they share an identical connector, but the authentic atty has an off white grommet, whereas the questionable item has a translucent grommet. Also, while they both are engraved with the resistance, the text on the authentic is slightly larger.
Here's where I noticed the biggest difference, and I believe was causing all of my problems. The authentic item has an approximately 1/8 inch rubber or plastic sleeve-like grommet in front of the metal positioning ring in the center pin tube, whereas the questionable one relies on a clear rubber grommet on the pin itself. Also, the pins are of slightly different diameter (as little as a dozen mils maybe? enough to notice it when held together, otherwise indistinguishable), and the metal lip is in slightly different positions on the pin itself. The hole in the bottom, a.k.a. the center pin of the 510 connection, has a larger diameter on the authentic, while smaller on the questionable (able to fit a T-5 tip almost to the hilt on the authentic, only the tip on the questionable).
When the unit is assembled, the authentic center pin has almost no movement whatsoever, and was difficult to remove from the tube assembly, whereas the questionable pops right out, and when put back in moves side to side almost with a mind of it's own.
I accidentally reversed these, on the RIGHT is the authentic, LEFT is the questionable. As you can see, the drip tip did come with that little sleeve inside everyone else has found. I personally use my own drip tip, so I don't really care on this point.
On the tanks themselves, the text is almost identical, other than decimal places and how much actual gradient is marked. Otherwise identical in diameter, width, material (i believe) and threading.
I hope all this helps someone. The only thing i can see on the questionable one that makes it less viable than the authentic is the center post. If you can get the questionable ones dirty cheap (glory vapes, any one?) and then buy the center posts to replace, you can still save some money, as long as your not going out of you way to do this and losing money on shipping.