Ok, no idea if this will help or not (I did take some pics after wicking etc but my cheap phone struggles with up close, so I won't bother posting those yet)
I just coiled and wicked as normal and primed the cotton until it was fat, juicy and fully saturated.
I put the tank together but didn't fill it and just vaped like I normally would on a bone dry tank while browsing the forum.
It took 23 puffs and 20 minutes before I got any hint of a dry hit.
I know that doesn't say anything about how well it's wicking from the tank because it had no liquid in it... but it gives you an idea of how much cotton I have in there. .... and if I can vape normally for 20 mins with no liquid flow at all, I can't see how it wouldn't ever keep up with me when it was full of liquid.
Maybe it does just come down to how we all vape differently?
2.5mm ID SS coil 0.6ish ohms .. about 10mm off a fiber freaks cotton blend no1 (that I kind of roll into a wick) ... 50/50 liquid, 12w.