This might sound dumb, but when you put the atomizer in do you have it on the GGTS? If you do, and have it all screwed down, it won't sit right (battery pushing the pin up). I forget this from time to time, but generally remember when I notice the atomizer is sitting kind of cocked (or is loose so I can push it back and forth). Take it off the GGTS (or just loosen the TS a bit so the battery is loose), then screw in the atomizer and continue on your way.