UPDATE: Ok so Fasttech made good on their promise and gave me store credit for my purchase, which I used to buy a Sigelei 150W mod (posted for sale in trade forum). I'm happy their customer service was responsive and kept their promise, however it took them a LOOOONG time to send me the replacement items. I'm not sure I'll be using them again in the future if only because of the extended turnaround times and shipping from China.