Still no leaks very satisfied with these

I've been testing these for leaks I've placed them in different orientations and with different PG/VG ratios from 30pg/70vg for two and 40pg/60vg for the other two and still no issues. I have go through 2 carts already with me and some friends and they are really happy with the airflow as am I. The carts I made for them using standard 30pg/70vg have been working just fine, I am so glad that I can start using PG in my carts again. Using VG only no matter how much deems I used and having every cart I tried all from CCELL and a few random branded ones that use CCELL tech and all would leak from the bottom airflow holes and onto the battery causing contact issues as well as shorting. I would have no issues using VG only but the issue with it and all my friends noticed that it made the carts rough on the throat no matter what temp or voltage we used. I'm really surprised they noticed it right away and all said something about it because I don't tell them what I did to said carts I just give them the carts and have them tell me how they feel as to not give them something to focus their attention on and I can get a genuine and general consensus about each cart batch I made and all said the same thing on the last carts before these came in... To harsh and not enough airflow, airflow has always been an issue except using the geekvape sonder Q but those weren't the same style of carts and are another beast on their own. Well as far as these carts go and I've been using them and testing them daily these have been working very well. My only gripe was how many carts I had to purchase to get a good deal and seeing as I can't find these in anything over 100 carts at once I will be stuck with 500 carts that I will never need or use. Even if I had 100 I would still never use them all myself or with my friends group. If I didn't answer a question you had or you would like to know more about these please dont hesitate to contact me I have no issues with sharing anything I've learned so far.