For others searching... I stripped some wire. I kept the jacket, and cut it so it was a teeny-tiny collar. Ideally, just a hair longer than the length between the top of the bottle and the atty connector. Slide that over the needle prior to reinserting the bottle. It's stopped all leaks. I have no idea if the jacket is being heated much, but it hasn't melted on or anything like that yet.
I can't tell you what gauge wire it is, but I can tell you that I clipped it from a SATA to IDE power connector that I had lying around on my desk. If I had to guess... 22AWG?
What a great Idea..thanks so much I will check into doing that on every bottle assemble.
Thanks Ron Old Goat