I have just upgraded to a Protank from about 8 months of using an evod. I got fed up not being able with my bad eye sight to see in side the little slot window and finding the cartomiser and battery connections awkward. I was also constantly getting the burnt wick taste and had hoped that this too would be solved. Unfortunately, I used my new Protank about 4 or five times getting a great vape, like absolutely amazing, and then out of the blue the burnt wick taste was back with a vengeance, it was full of juice and I did nothing that I can think of to cause it. I've changed the brand new wick, that came with it, and put one in that I put together myself but it is still the same. What am I doing wrong????