I took off the second o ring from the bottom so it would be easier to get the bottom off and on for you.. I threw it in the envelope though (or at least I think I did) if you put it back on it should be very tight. You can increase vapor by twisting the top cap and opening up the second hole there is a position where the top cap 2 large holes are open across from each other. This will increase vapor by a lot but it will reduce your flavor. the top cap is also tight but it will twist to give you different air draws. I am not sure much air will come through bottom cap to middle section even loose. Also try twisting the middle onto the bottom I had it pretty snug when I sent it. Finally iif you use some inexpensive juice on the o rings it makes it easier to twist it on if you choose to add second ring. Glad you like the flavor!
I'm having a lot of fun experimenting with this! I'm getting lots of nic. I can see why people go down to 6mg for sure. Again, thanks so much for the gift and for your continued help. You really have changed the game for me!