i tried with just the second ring, seems better and seem to get consistent wicking. still get juicy vapes though, guess i'll just have to learn to live with it. the old ones definately didn't have this happening. but I guess tubes that don't crack, that you can see through are worth the extra juice consumption.
what i'd like is to be able to poke a couple of holes into the second ring and just be able to fill without removing it every time, not sure how to make the holes though.
The silicone is very soft. If you wanted to make a fill hole you could poke a sewing needle through, or perhaps a really tiny gauge blunt or hypodermic needle. (18 or 20 gauge should do.) As long as your juice isn't too thin (like, pure PG) you shouldn't get any leakage.
Are you using a drip tip? I find that really helps significantly cut down on condensation accumulating so much that you get juice in the mouth.