I had a little bit of a learning curve when I first got them, but after wearing 3 to 5 tanks full of juice that leaked out I have it down pat. My biggest problem was that I chain VAPE, so I would be pulling on it too hard, and flooding the atty, that mixed with a 100 PG, and my lanyard posisition of battery side down, well it was the perfect storm. I was also pulling off the end caps at first to refill them, but I went to a dentist office and bought some syringes from them, they are designed for cleaning out your mouth, so instead of having a needle, they have a curved piece of plastic on the end, it works perfectly for drawing out of the bottles, and then filling through the hole punctured by the atty. After I changed the way my PV hangs (mouth side down) don't draw as hard, and am using mainly 70/30 I haven't had a leake since. I thought I did a couple of times, when I noticed 15 minutes after I put a new tank in that it was almost dry.........but I realized that I had actually vapid it all up, the remaining bit was brown liquid from me overheating it from co stately vaping, the original liquid was. Clear.
Anyway I couldn't be happier, and have quit ordering new vaping toys since I got this
I think my only weaknes will be a 510-510 battery extender, sometimes it just won't draw well, and I would love to get it really drawing better.
Anyway I couldn't be happier, and have quit ordering new vaping toys since I got this