No, I have two, and they both work. Caveat--one sometimes doesn't work with some of my eVod
tanks. When I ordered my first Provari, I also ordered the adapter. I realized the threading on some of my eVod heads didn't want to screw down on the adapter. Those would go if I forced them, but they were usually a bit sideways and didn't fit well. It seems the post inside was a little too high, and as soon as it contacted the firing pin under the
tank, it just wouldn't fit down any farther. They did work, however, very carefully. I just ordered another Provari a couple of weeks ago, and the new adapter works very well. The pin isn't as high in this one, and I've not had any problems at all with it. I had noticed at least one very upset reviewer on their site about the adaptor. I guess they took care of it.
Also, they sell the sealed one that won't leak onto your battery. I understand there are some out there that aren't sealed.