Hi:
I watched the videos, read some of the posts and was intrigued. I'm using a TW Titan Tornado with a 510 Mega atty/cart. The atty is just like a 510 only the barrel is longer, so you use a cart with a longer shank (= larger reservoir). I'm still not sold on the efficacy of the Mega over a standard 510 atty/cart. I think the wicking force drops off with distance from the atty bridge, so you end up with a larger amount of unused liquid (JMO).
In addition, I'm vaping Drewbacco from Nhaler. Drew's liquids blow major clouds, but the viscosity is higher that average, which presents a refill problem.
So I thought I'd give this mod a try.
The Mega cart required I use the entire bag in one go. NBD - this stuff is cheap enough. Now for the refill - 46 regular size drops (not the teeny "I'm in denial" drops).
Turned the cart upside down - no leakage. So far so good. Inserted and began to vape. Usual amount of vapor one would expect from a fresh cart. No nasty tastes. But no increase in taste intensity that moobyghost reported either.
Subsequent vapes: Minor bubling & a noisy draw indicative of some flooding but so long as it doesn't worsen, I'm OK with it. Checked the top of the filler - no obvious signs of melting, burning, etc.
As I write, I've only been vaping on this mod for about 15 minutes. I'll post back with how efficient the mod is with the eliquid and how subsequent refills go.