1) 510 to 510/ego connector. Would get to you faster if you
buy from some place else rather than the link below. Just happened that I had that link on hand.
https://www.
fasttech.com/products/0/10003955/1284600-510-to-ego-adapter-convertor-for-e-cigarette
There is another connector that is ego to ego from another site. Would look better on your twist. Unfortunately, I can't remember the site and the item is not widely sold. Most stock 510 to 510/ego.
2) Use a silicon tubing in place of the grommet in the positive pin if you recoil.That way, you can "adjust" how high or low you want the pin to be. There's a
thread on ECF about the tubing which you can get on eBay. Search for "burnt grommet fix" or something like that.