My mod and tank get very hot when I chain vape. I’m vaping at 83-85 watts. I’m using two LG 18650 3000mah batteries. What can be causing this? Are my batteries going bad? I’ve had them for a year but the manufacturer production date is May 2016 according to batterybro.com. I have the Cloud Beast tank and V8 X4 coils. Any advice is appreciated..