After more than a year of development it is now available, the Steath Vape Bottom Fedder connector.
Externally similar to the Source connector, the inner workings have been completely redesigned.
Flattened nut with protection against spoiling, similar to the Vape & Make Vari Nut
The Vari nut can also be used. Please make sure that there is insulation between the nut and the connector.