milo......If I read your question right, you want a "unsealed ego connector"?
Two thoughts on that....take the center pin from a "unsealed 510 connector" and put it in the ego connector...Or looking at the ego connector, I have in my hand, it looks like the center pin can be drilled out.....
Can't find a ego connector?
www.goodprophets.com Also looking at GP's site, they say the 510 connectors are unsealed....
Good luck.....with your pipe.......
duckie.............