Ohm readings all over the map. Dissembled the whole thing. Very easy to take it apart. The M50 version with upgraded firmware with the plastic button. Pop the button out, pull all the screws out and everything slides out. Cleaned the 510 connector a few times, the brass screw especially. Cleaned the top and bottom plates near the screws. After messing with it a few times, its all back together and working like new again. Its all about keeping all the connections super clean. Its been my go to mod for months now, small and effective. Happy vaping camper!