Hah, I ran out of non-punched carto's and looked at my punched ones thinking how I could get away with it but decided best not screw with it. If your device has eGo Cone threading I've bought around 10 EMDCC's and gotta say they've been great to me, work well at a variety of power levels and every juice I've put into it tasted correct to me no funkiness and holding around 4ml of juice makes it suitable for long term use.