This tank... boy is it a hassle. It took me hours just to get the wicking down and I've had problems left and right. The airflow ring is useless, in fact it serves more purpose as an actual ring, and the juice feeding is to small. If any bit of wick gets into those channels even a little bit then you're in dry hit city. Light wicking and tucking under the coil and over the channel but not in works best. Even then it still feels a little on the dry side. Once you manage to crawl under the barbed wire and figure this tank out, it rewards you with a below average vape... But hey, I only got it for the antique value so I wasn't expecting much. If you want one just to own one then get it but if you're actually looking for an older tank with a good vape look elsewhere. The Kayfun V5 or Russian 91% V2 is your best bet.