Hi, noob to Provari and need some help. I bought one 18650 battery from provape to go with my Provari, that battery works great. My problem happens when I use my imr18650 efest 2000mah battery, after I take a vape the fire button flashes until I take out the battery. I noticed the efest is slightly taller and wider in diameter, not sure if this is why but is the only visible distinction between the two.......please help