I have the type b ego-t and i had so many leaking issues that i was just about done with them. I got soft replacement caps and pre-punched the hole in the bottom so the spike in the atty did not tear the opening. I learned how to punch the hole from a guy on youtube, i just searched under ego-t leaks. I also switched to a 60pg 40vg custom blend for most of my liquid, but also use a lot of high caliber 50/50 and still wicks fine with no leaks.If you resolve your leaking issues like i did and everybody else should you will have a wonderful vaping expierience with the ego-t. I was messing with my attys when i saw how bad it was leaking, but found out quick that if the wick is just about flush with the top of the spike it will be fine. The pre-punched caps seal tight, so i dont even have problems with pure pg, but with thicker juice it is even more insurance that i can have a strong draw and get clouds of vapor with very little tinkering. Also make sure you blow out your attys each time you refill, extra fluid in the atty is normal, just dont run it dry.