I bought two new mods and a fresh set of 18650s but my atomizers aren't working. They're old but were never used or opened. The mods are both pretty advanced 1s the Heatvape invader mini and the others a BEC Pro by Smok. I'm thinking maybe do they require a special quality of atomizer? The atomizers I've got are all for my pretty oldschool Kanger Protank and they'd been working fine with my Vamo mods until the Vamos connections would get worn <also need a fix for That bother as well