So I rebuilt my first vivi nova head last night. 5 wraps of 32g kanthal wire with 2mm silica wick. I haven't had any issues with it shorting out and it came up as 2.1ohms. My issue is once the vivi nova is about half way filled with juice I tend to get a few more dry hits than I did with the stock head. Is there something I could do to fix it? Did I do something wrong?