I recently purchased an 18650 manhattan clone. For whatever reason it will not fire with any atty. Ive tried with a kanger subtank, little boy, holy grail, and doge. The button and bottom contact pin are fully screwed in and the top contact pin is surely making contact with the atty and battery. Ive tried adjusting everything and cant seem to get.it.to fire, although i did get it to fire once the day after i bought, but just that single time. Im using a fully charged aw 18650 that works fine in any other 18650 mod i have, since the battery is brand new. Im just lost and cant.figure.out the issue