What size are the premade coils that comes with the RBA in this kit?? Anybody knows?? Or a top of wich I can use. Bought SS 316L and Clapton but they are far to big. Tried SS 2 times. Doesn't work. I tried with the small and got it to work. I am not a pro builder by any means. Just started so I need.some help. I guess I have to use kanthal but what size is the question. Pls guys help me.