So I haven't read the whole thread, but I did read about 50 pages of it. I'm not a rebuild expert, even though I have rewicked evod BCCs several times. Posting both my opinions and also looking for tips to improve my techniques since I'm new to RBA.
Got my fogger v2 last week. The build mine came with was weak vapor, moderately slow wicking, and not very much flavor. Coil was big loops and pretty uneven. No shorts and the ohms were around 1.9 IIRC, at least.
Tried rewrapping the SS roll wick that it came with. Must not have oxidized it enough because it was shorting to the wick, only the lead at the end was heating up, and my resistances were all over the place.
Gave up on the SS wick, and started a new build with 32g kanthal and silica. 8/7 wrap around a round toothpick, came in at 3.2 ohms. Used the individual strands from 3mm silica rope to give it a somewhat loose wick in the coil, trimmed to just touch the glass, and laid two strands on top, also trimmed to just touch the glass. I know from experience that BCC needs really short trimmed wicks.
Using my itaste svd, I hit it with the air all the way open at 7w on a fresh battery. Not much of anything. Choked the air to half way, and it's hitting better, but I'm getting intense throat hit without much flavor on 80/20 24mg vanilla butternut that does well in my davide/anyvape BCCs.
I can run it at 9w but it starts to dry up a little unless I suck harder than I am accustomed to, and flavor doesn't improve much. Heating time is reasonable even with such a long coil.
So my thoughts:
My air adjust ring is too loose. I might put a tiny drop of blue locktite on its threads to tighten it up so it holds its position.
It's a little difficult to get the coil under the posts due to the BCC skirt around the posts, but I found that putting toothpick in the coil to keep it straight and leaving long leads on the end lets you wrap it around the screw post, tighten the screw, and then wiggle the excess lead to break it off at the post.
Filling this thing is more of a hassle than it needs to be. If there was an air release hole on the top as well it would be a lot easier to fill without a syringe. As well, why not a tiny rubber stopper instead of a screw? I don't see the need for a screw on the fill hole. At least the tank is big so "portable refilling" isn't really necessary.
I have had no problems with burned hits at all, but I generally don't try to run crazy wattages and wick rates. I also have not had any problems with flooding, except right after the fill, I had to blow it out.
It feels kind of weird knowing if I pull on the thing the wrong way, fluid is going to go everywhere if the glass pulls off the bottom. This is probably mostly psychological, but I'm a little afraid to put it in my pocket.
I like that it's the same diameter as a full size tube mod like my svd or vamo, and it makes me wonder why kanger and anyvape don't pick up on this idea and make a "protank jumbo" or something, that has a huge capacity and is flush on a full size tube mod.
It's heavy. Really heavy. And a lot of the weight is athestics, since there's no need for the top part to cover so much of the tank. Seems to me they could have just made a disc to screw on the top to accept a 510 tip. Then they wouldn't have had to make a complicated stepped glass tank and also increased the capacity, and probably could have used slightly thinner glass if they didn't need to step the tank.
I still think it's an exciting innovation, but mostly because I think a lot of the ideas in it could be done better, and I'm hopeful to see what comes in the future along these lines.
Anyway I suspect my build is still far from ideal, but so far I have not gotten good flavor out of it.