Haha Yeah those damn coils!!
When I first got the kayfun I spent a whole day trying to make coils, they worked but the taste was always burnt. To cut a story that could possibly get long, short; it turned out that if i actually filled the kayfun with juice it worked great. haha
The coils last ages too, they clean up so easy with a dry burn and water, bit of new cotton wool and they're ready go!