I think that the madvapes unsealed connector works:
www.madvapes.com/v2-510-shorty-extension.html
They also offer the circuit board spacer, another handy doodad:
www.madvapes.com/circuit-board-spacer.html
Sent from my Samsung Galaxy Tab S 8.4 using Xparent Purple Tapatalk 2
www.madvapes.com/v2-510-shorty-extension.html
They also offer the circuit board spacer, another handy doodad:
www.madvapes.com/circuit-board-spacer.html
Sent from my Samsung Galaxy Tab S 8.4 using Xparent Purple Tapatalk 2

One annoying thing though, is the thumb nut that secures the positive wire has a tendency to loosen up - then there's no joy. And even in single coil mode, it's a little juice hog, even with its almost-3ml capacity. Mine is the ±$24 one.