I saw a couple of reviews that agree with you, im very curious about the deck air system... this just makes sense to me, air flow from under the coil.
The deck airflow is what initially peaked my interest on the Magma, I've been getting kinda bored of the regular 3-post dual coil dripper setup that is pretty much identical between a wide range of the RDAs available, so I've been looking for something different. My only other experience with this type of deck airflow is on the octopus awhile back, which was a total POS in every way, so I was a bit soured on the whole deck air idea. But it works great, gives a large amount of airflow, and has a different feeling draw compared to standard side cap air holes.
In my mind I imagine the airflow coming up from the deck and very gently being directed into the drip tip via the domed top cap, seems like it would be a much more free flowing and less turbulent path for the vapor, which might also account for the flavor. I won't say flavor is absolutely better on every juice. In the same way a genny really shines on certain juices, and falls a bit short on others, the Magma seems to really bring out certain flavors but doesn't do justice to others.
I was vaping a green apple juice (that actually tastes more like red vines) which has an excellent flavor on Mesh, and good flavor on cotton in my other drippers, but on the Magma the flavor just doesn't seem to blend as well or something, it's hard to explain.
But both a Mango, and a pink starburst juice are coming out better in the Magma than in any of my other drippers or gennys. For any craft beer drinkers, it's seems similar to the difference between drinking a beer from the bottle, or drinking it from the proper glass. The profile of the flavor seems different with the Magma, which may or may not be a good thing depending on what juice you have.
Question, do you make your wicks extra long so you can stuff it in the wells, or do you keep it normal length and then just fill the wells with juice. In OP's pic with his coils, it seems as if there is very little cotton going into the wells that has a pool of juice. I been stuffing the wells with extra long wick and just saturating the crap out of it and also tried sera to hold the juice. Im going to have to try regular length wick with lots of liquid in the wells since I've yet to take advantage of the Magmas capacity. So far its pretty much been working for me but just like a regular dripper, I need to drip constantly or itll get dry even with the saturated ends of the wicks.
I'll second what John said, just use a small amount of wick that drips down into the well, and leave the rest of the space open for juice. This will increase your capacity quite a bit and will most likely increase the wicking ability too.
Now that I've spent some more time with it I'm not any less impressed, it's not my first high-end atty or device, but I still can't stop myself from fiddling with it every few minutes. There's just something that seems really special about it, although that probably comes down to a magical combination of personal preferences being met.
I have noticed a few minor complains though, the most annoying is the super long 510 center pin. On something like a Nemesis it's no issue, but on something like a Caravela you'll definitely need different length center pins or else face a huge gap somewhere. I haven't run into issues, but for someone with a limited number of mods, or limited parts or ability to tweak their mod it might be a deal breaker and deserves mentioning.
I still have not encountered any actual leaking from the lack or o-ring on the top cap, although I have noticed that when you are re-mounting the cap, if there is any juice in there it will drip down and get between the AFC ring and the atty, and squeeze tiny amounts out at random times. Now that I've been wiping the cap dry before putting it back on, the ACF ring has stayed perfectly dry.
A bit annoying, but most RDAs I have will squeeze a bit of juice out when putting the cap back on, so I can't really single out the Magma for that.
One improvement that I think could be made, is to have a tube sticking out from the air hole in the deck. Have it extend 1/8th inch or so above the deck, and this should almost completely eliminate any sort of leaking due to over filling. A lot of the deck airflow attys have this little nipple/tube and it would have been nice to see on the Magma.
It seems like it would be pretty easy to mod it by drilling out the air holes a bit, and finding a SS tube of the proper diameter to press fit into the holes. I'll have to order some really thick syringes and see if any fit.
It's still pretty leak resistant in stock configuration, when completely full of juice if it's laid horizontal with the air hole down it'll leak a bit of juice, but won't dump all of it like a genny can. After a few puffs it becomes fairly leak proof though, I've been laying it down on my car's dash, coffee table, etc without paying any attention and haven't spilled anything as long as I vape it a few times after it's filled up completely.
Anyway, sorry for rambling on so much!