Received my tank 2 days ago and been fiddling with it ever since. Sure could use some advice. I have primed correctly using Baditude method. The vape is amazing for a while then it starts getting dry. I can close the air holes and eventually fill it back up by taking short hard dry puffs. But this seems way to difficult. I am using my provari with the 22mm pro ring and the draw is airy but it is nice flavor. The cartos are Smok 2ohm single coil 2 hole. I vape a 60/40 mix in most of my DIY flavors. I can only compare it to my PT2 but on the PT2 I can see a little air bubble about every other draw. With the carto I do not get this unless I draw it real fast and hard. My dang cheeks are sore and my head hurts so I know that I must be doing something wrong. Should I see bubbles as I vape? Is that a sign to know if the carto is staying full as I vape? I am now pulling the drip tip off every so often to see if it is still primed so I do not burn up a carto. They are slim picking rich now. Are the cartos just too tight and I need less air flow in order to get a good flow of juice?