Hi all, anyone ever had burns on their tongue like this? i have been vaping for around 2.5 years and never had this before. i recently bought a 20 Eleaf Istick and changed my eliquid to hangsen 12mg berry flavour. That was around about 2 weeks ago. The battery is more powerful than any I have ever used before even on its lowest setting. the liquids ingredients seem to be the same as my previous liquid. Since changing I've had a constant bad throat and my cig seems to be burning my tongue. I woke up this morning and my tongue was like the pictures... anyone had or seen this before? Any recommendations?