I ordered 4 aerotank bases for my protank 2,s from Sun Vapers, which I received yesterday. One of them was defective (would not accept a automizer, apparently it was not threaded.), so I sent an e-mail to them stating the above. Within minutes I received an e-mail back apologizing for my inconvenience and stating that a replacement base (which had been personally tested) was on the way. This is the first time I have ordered from Sun Vapers, but it will definitely not be the last. That kind of customer service is very much appreciated.