I've been using my GGTB since Christmas. I do have a problem.... it seems like maybe the button is not making a good connection with the battery. I'm using a 14500 trustfire battery. Sometimes it seems to hit and sometimes not. I'm also using an adapter with a 510 atty. To be honest, I don't know if this is a button problem, an atty problem, or a user problem (probably the last). When I first drip 2 drops on the atty, the first two or three hits feels like I'm not getting anything and there is no sizzle - I can't hear the atty firing. After that the next two hits are ok. Then the burnt taste begins and I have to add 2 more drops. Any ideas?