I am going to insert my view here because I think it's important that this thread doesn't get derailed by opinion on air hole locations and air hole sizes.
Or discourage someone from trying a rebuildable because of it.
This is not directed at any one person, I have seen this concern and talk of it all over ECF, so this is just me addressing it before this thread turns into a free for all.
1. The Holes on these items not being lined up to the wick is not a manufacturing flaw and the item is certainly not defective.
I am not saying the opinion isn't valid
because it is, what I am saying is that the air hole location does not make it "defective".
I have used both, one with it lined up and without, I have used both stainless mesh and wick. I see a slight difference, the other way. LD thinks it's hugely important for the hole to line up, with all respect to him and I do highly value his opinion, I don't agree.
He recently made me some ss wicks because I was having problems and I've had a chance to try it several ways. I actually think more air mingled with the direct vapor is slightly more pleasant rather than directly sucking the vapor from the coil
(not sure if that is what actually happens, but still)
Perhaps this is because I am not a sophisticated vaper, I do not know, but in my experience the location of the air hole made little difference
to me. If this is not something you would enjoy using, obviously do not buy it. I have communicated the concerns of the air hole to the manufacturer and I am sure they will address it (hopefully) but again, I do not feel this is a defect. It's just an area of improvement and one that does not affect everyone the same way.
I have literally 100+ emails on these telling me how fantastic they are and not going back to cartos, so clearly a lot of people love them as they are. They may not be sophisticated enough to see or desire a difference, but to a regular vaper like myself, it makes no real difference whatsoever.
This is why I say it is not a flaw, not to discount someones valid concern, but to point out that it is not defective. What we should be talking about is that this 30.00 device is not exactly comparable to the 100+ device. Now that is a valid argument. The originals are clearly a better option if you have the money. I am not at all interested in selling $100 devices, my interest is and always will be to get the best I can get for the lowest price possible.
Comparing a $30 device to a $100 device and calling it defective because it doesn't exactly match up is not really a valid comparison.
2. The size of the air hole does make a difference, bit is also not a flaw.
However, some like them small, other do not, I will no longer tell a manufacturer to make a hole bigger. I did that with the Griffin and now I have many people asking for the smaller hole. What I will do going forward is ask for top caps to be made with both.
3. These are built in China.
and are a third or less of the cost of a professional making them.
they are not done by hand by a professional with precise quality in mind, the Chinese do not understand many of the things they build and do not have the equipment or manufacturing prowess to make these the way they are made by the professionals.
The Chinese would never be featured on "How it's Made" 
We are paying
30.00 for stainless parts that come off lines, meaning they tap the tops and they drop into a bin, then they are drilled for the airhole. They are not lined up to the start point and drilled in the same spot. This would require attention to detail or automation neither of which they have. It's all done by hand by people stuck in crappy conditions. I've been to a few China factories
(not for this business but years back for something else) The holes on the griffin, the Hydra and Tiamat are not all in the same exact location. Could they do it? sure, will they, maybe.
I have read the comment of
"if we don't buy them it will force them to make it better" more than a few times on ecf.
As far as forcing their hand and not buying them, that isn't going to happen.
these are now everywhere and they are all starting to make them, I am out of the Tiamat and I get 10+ emails a day asking to preorder or when are they coming back. They are selling them as fast as they can make them and I am not going to sit on the sidelines demanding a change. I would if they were defective, but they are not. From a business standpoint I also cannot allow myself to make a stand for something I am not completely on board with.
All I can promise is that I will relay the concerns of the community along to them and hope that they make the proper changes. If they make the change and start selling more because of that, all the rest of the manufacturers will fall in line. That is all we can hope for. If they see a value in it or a leg up on the competition they will do it.
Bottom Line:
I am not belittling anyone's concern or their opinions, I hear them and relay them, please feel free to voice an opinion, heck, make it a strong opinion, tell everyone you'd never buy it and why, but
please refrain from specifically saying it's broken, defective or otherwise not working.
, take no offence please ! 
