I love my Vivi nova tank but I am having a little bit of a problem. Using the same 8mg blue water punch in the vivi nova I have to constantly clean the atty to keep from the burning taste. With the 1.5 dual coil tube tank the pull and taste arent as good but the juice doesnt ever taste burnt until weeks after use. Am i doing something wrong? I am using them both at 3.7 right now because i wanted to see the difference in juice. The tube tank juice is more clean looking by a landslide. How do I fix what I am doing wrong so can keep up the great taste of the nova without cleaning every two days or so?