Small gap between my cartridge and the walls of my Swon.
The cartridge has space to move around in your battery and the cartridge seems thin, but you are still able to get vapor production. This occurrence is normal, as different cartridges may vary in dimensions. The gap inside the device will not affect the functionality of your battery. Purely cosmetic. If you have a problem with your Swon device, please give our Customer Service Agents a call or email.