Hi, wondering if anyone can shed some light on this, I am using a istick 20W with Genitank and Kanger Update coil 1.2, firstly, the display is saying 1.3-1.4, secondly, after only a couple fillings, vaping at 12-13 watts, it starting to taste very burnt. Is this normal? Am I doing something wrong? Been using Freedomsmoke USA Smurf Blood 6mg. Thanks.