Hmm...haven't tried this but....what about leaving the screw OUT and just a little piece of tape over the hole?
That might work too but when I feel like the carto is getting on the dry side.. I take out the screw and take one or two draws and then put the screw back in.. any more than 2 draws and the carto starts gurgling. The tank has to be air tight or the air that is coming in WILL cause the carto to flood. A piece of tape would work in a pinch but it would need to be airtight when it's on the tank.
If I have a carto that keeps flooding.. I vape in front of the mirror to see where the air bubbles are coming in. I've seen tiny bubbles coming up from the bottom grommet and then know I've got an air leak that will require sucking out the juice and taking it apart and reassembling it. being able to take the screw (or tape) out will vent the excess air out of the tank.. but until the leak is fixed.. it will keep building pressure and force the juice into the carto (in excess) and then gurgling and spitting. If I'm somewhere that I can't fix it.. for instance I was on a road trip to my daughter's college the other week and it started flooding.. I can tilt the device to where the punched hole in the carto is above the juice so when I vape, it won't be sucked into the hole.
Once I understood how tanks work, I have no had a problem that I haven't been able to fix. If I have a carto that doesn't wick well and wants to give a burnt taste, I have to take the screw out and vape to let some air in and it will force juice into the carto. It's a hassle when this happens but it's better than carrying around a syringe of juice to fill the carto.. I can do it while driving without having to take my eyes off the road. To me, fill/vent holes are a MUST! A thumb screw is also a must.. I have to be able to easily take the screw in and out when I need to without having to use a screw driver.
This smoktech I'm using this week wicks A LOT better than the boge I was using last week but every once in a while I take the screw out to let some air in and it wicks better.
The chibi design is good but until they add a fill/vent hole, people are going to be coming here complaining about flooding and dry, burnt hits. Even though I make my own tanks, I did purchase a mini sub from momandpopsvaporshop to see what the hole was all about. I went ahead a bought the assembled sub tank and it came with a 3ohm boge that had 3 holes punched in it.. I filled it and let it sit and sit and still got a nasty burnt taste. It was obviously not wicking. (and I use mostly PG in my mixes) So I was able to vent the tank to get the juice flowing up into the carto and it worked after that. ( I did have to keep venting pretty often but it DID work) If I had been using a tank without the hole in it, I wouldn't have been able to use it and I would have ended up posting on here .. "Help! this tank doesn't work!"
