Hello all, I am new here and really only have one question. I recently bought a Helios clone RDA and am having trouble with it. Every time I make my own coil it doesn't work with the battery.I have 2 510 Ego T batteries (a 650 and a 1300) as well as a cool fire 2 variable wattage but the atty doesn't work on either. I have tried more coils, less coils, no coils, but nothing. My battery lights up for a second and then won't do anything. I think I short circuited one battery already. Am I doing something wrong or is it just defective? FYI, it worked when I got it but not now. I'm rebuilding it with 28 gauge kanthal and using boiled (and dried) cotton yarn for the wick. Please help and thanks in advance.