I have had many DEFECTIVE REFILLS, especially in my last order. I bought 12 packs. 4 packs were bad. I have been completely frustrated with the inconsistency of the refills. The problems I’ve had. Clogged refills, chemical leaks, hard to draw, becomes hot shortening battery life, weak flavor, extremely short life.
When I get a good refill, it will last me approx 1-1/2 days. When they are good, they are really good.
I just notice some of the clogged refills are missing a tiny air hole below the screw mount which is obviously a defect. I have emailed customer service and talked to the online chat support. It’s been 10 days and have not heard back. Seems they are too cheap to replace 4 packs and are writing me off. Do the math dudes. I’ve spent over $500 so far.