Good afternoon to you, my dear TT. All is well, I trust, in the lands of East Texas?
Some of us hoarders, I mean, old-timers still have the condom bottoms from the original V4L cartos -- I am sure you remember those...the little ....-plug came attached to the condom? Before they went cheapo on us and did away with it altogether?
They fit in the DC's (and other various and sundry cartos) very nicely, essentially plugging that hole from the bottom. Now, juice can still get in the airway as it is not nearly long enough to occlude the entire length of an XL airway, for example. But it has the advantage of not only blocking most of the passage; but, the pressure that happens when you pull it off will, essentially, pull out the majority of the juice that is not in the filler material, proper. It also hastens the speed of which you can fill the carto if you have a slow soaking juice. I used to Taryn Spin; I've decided I'm dizzy enough to forego that pleasure at this point in vaping and this little trick works for me.