I have been using the ProTank v1 for several months now and I have been banging my head against the wall trying to get it to work right. When it works well it is great, but when it does not, I tend to take it off and not use it for awhile. I then pull it out and start all over again. I think I have it figured out finally. I watched all the YouTube videos and tried removing wicks only to have the tank flood. I tried flipping the silicone seal upside down, but I would get dry hits. I noticed that when I would remove the tank to fill it, it would be good for awhile and then start with the dry hits again. I noticed that when I would refill the tank, I would get good vapor production for awhile, and then problems. What I have started doing now is when I start to get the burning, or just every so often, I just take the tank off, remove the bottom cap, put the bottom cap back on and vape away! It would appear that when all the wicks are left in, the tank develops a bit of a vacuum and the "burping" of the tank seems to correct it. I do NOT remove any wicks anymore and I am vaping Bobas Bounty on an iTaste SVD. I hope this helps some of you experiencing the same issues.