Okay, so I was justing watching some tv with my pen next to me and I notice the shut off light going off and i realize the battery is firing by itself. So i disconnect the tank and it stops and then it stoos turning on. Then it does something else where the battery will fkash and stay on with one push then do two or three slow flashes then turn off. Now it won't turn on again and it doesn't burn the liquid in the tank even when it does turn on by itself, and it does fire still because i was trying to fix the center pin and would start burning the metal on my knife.