I have been vaping both vv and vw devices for well over a year but as im not super updated, i just picked up a ismoka BCC and a Innokin 134. Being rated at 2.6 ohms, i naturally vaped it at 10 watts which outputs 5 volts. While a little high, it would normally be fine on most tanks. But ive gotten quite a bit of burn on the tank, but when at 9 watts, 4.5 volts or so, its burn free. Is this normal with BCC's?