@Kasia, can you explain? Where does the juice get in? Do you use the tiny bottom washer or just screw them down? With the Boge, the seal is very good just (soft) metal to (hard) metal. Not even seeping, and with the plastic robe on the carto the seal on the upper part is even better than on the Vapage burners. Juice works up into the filler chamber, while the airtube stays clear. BUT without the hole, I can't see juice getting into the carto. Can you show us how the Kanger is constructed, and where to get some to try? There are people now and then who say they've found a better carto, but almost everybody comes back to the 2 Ohm Boges. They make a huge fine-particle vapor, very flavorful. On a freshly charged battery, it's almost too much. Almost ;-)
You are right, the feeder and size are great... "
Just screw them down.Here is the link to avidvaper.com
Kanger Horizontal Coil 510 Cartomizers - Avid Vaper