I just got my first DCT today and I am pretty stoked about it! Its smoke black and looks great on my V8! I have heard the dual coils kill your batteries faster, so we shall see I guess! Ok, question though. Can I put a single coil carto in my DCT? I was quite happy that my 70/30 pg/vg juice (Turtle Cheesecake from Vape Dudes) seems to be working quite well with the prepunched carto that came with the tank! I was a little worried because I have heard that pre punched cartos don't work well but mines doing great! Thank you VaporNine!!!