That sucks really....all smok products I've purchased before are really solid and good quality .
Even the authentication strip was proper, scratch and reveal and registered fine
I only used the rba as it came ready built , the draw is a bit too tight for me so i never really used it....I'll try and build my own coil soon and give another shot. I must say despite many negatives I've come across on the net ,the notch coil really surprised me, flavor is on par with my tfv4.