Please Be very carful with the rba section. It doesn't create a good connection and it can short out. This has happened twice to me. One of those times I was taking a drag while it shorted and wire basically exploded in my mouth. I tried a titanium build and it happened then I did SS build and same thing. It always said check atty on my vt200 but on my vs200 it worked to a degree if you like inhaling metal. Look at the pin on your crown and you should see how it doesn't stick out at all. When u put a stock coil it pushes the pin out a tiny bit but when u put the rba on it barley doesn't stick out enough I think. It was working on my SXK flask but it gave very odd results. I started a thread last night on the general discussion area. It's called ? About shorting coils.