Ok I am finally convinced that more mesh is only better to a point. having been running 180-170mmx37.5mm wick in my DID std wickhole (3.5mm) with a 7wrap 0.9 Ohm nichrome coil for a few days on my Paps I was feeling pretty stoked, but to be totally honest on a fresh battery it was a little on the burnt side and even around 3.80v I had to be careful to rest a moment between long double draws. So I had a sudden realization, and that was that if I had rolled my #500 mesh super tight, which I had, then how much juice could it really hold up top under the coil. sure it wicks fast, but It has no real reservoir of juice to supply to the coil. At least that was my thinking. so I pulled my 180mm wick out of the coil, dry burned the coil and took the scissors to my beautiful 180mm wick, I trimmed off around 50-60mm (leaving around 115mm) unwrapped, it and rerolled it a little less tightly to fit the 3.4mm coil size.
After dry burning and adjusting the coils WOW! what a difference, It wicks like crazy, seriously crazy. I've been running my 180mm fat wick in the DId with my adjustable tank breather screw about 3/4 the way out, and with this new looser rolled wick I have it almost all the way in otherwise it wicks too well, I have NO LEAKS AT ALL EVER, and I can take quadruple toke chain vapes without ANY dry or burnt tasting hits.
Now I know BJ is going to tell me again that only superman could roll wick too tight to be efficient, and as far as capillary action is concerned that is probably true, but I have tried vaping my DID at 6"o'clock position, and it just doesn't feel natural, but it does still give flawless performance, so I imagine we are seeing a happy balance of capillary & volcanic rise action here, and not gravitation flow, either way I am super happy with this new "semi solid" "semi tight rolled" super wick. Until I make the next personal breakthrough in my coil/mesh wick set up LOL