I have been using a Boge F16 carto tank in recent months exclusively. When they work, they work extremely well. I have used the same carto for two weeks without issue. Recently, I am finding they are extremely hit or miss. Like 50/50, which are not good odds. I will prime the carto by adding 4 drops at a time to each "corner" of the carto, drop, 1/4 turn, drop 1/4 turn, etc until juice comes out of the prepunched holes. I then fill the tank and even let it set overnight. I'll use it the next morning for an hour or so, then I get a nasty dry hit and the carto is forever changed for the worse. I have tried 50/50, 60/40, 70/30 and I still get the same issue. The juice just doesnt want to wick. These are 2 hole prepunched cartos, so you would think it wouldnt be an issue. I have tried enlarging the holes and adding a 3rd hole and then I just get flooding. I notice the filler in the Boges is much more dense and doesnt absorb like the smoktechs. I stopped using the smoktechs because they flood constantly. it seems like a catch 22 using a carto tank these days. I love the convenience they offer and silica wick systems burn too easily. What am I doing wrong? Should I just give up on these? They have such a great price and I get them shipped to my house extremely fast. I am hoping it's just an issue with my technique. Thanks in advance.