Try wrapping the nickel underneath the screw top and trap it there. i have had same issue, and this seems to work better. Glad your enjoying the Vapershark Atlantis nickel coils, I ordered me a set last night hope they make it to me by saturday.
Thanks for the suggestion, I'll try that out on my next build. I ordered the coils last Sunday and they created a label Monday and shipped on Tuesday. I just received them today. I couldn't believe how slow the USPS was from FL to NY. I believe it said 1-4 business days but I should've had these the latest, this past Saturday. I hope you have better luck!