I can't figure out how to get into the secondary features of this mod. I can get into the coil adjustment section but not other menu. It simply states to simultaneously press the fire and the + button and it should pull up the menu, however, I does not. I've tried tapping it quickly, held it for 10 more mode seconds, tapping it I'm succession, holding down one button then pressing the other, but nothing. Any ideas, anybody else have this mod or know about it?