Cignot is a good vendor but that doesn't mean THEY didn't get some bad attys from Joye. It's not the vendor it's the manufacturer's quality control!!
For those that have never had a problem with their Joye 510 attys, great, but how does you telling the OP that solve his problem? All it does is appear to discredit his complaint. It's just a sore spot with me because I have 11 of the suckers sitting here and have been looking for an explanation from Joye. There's another thread with 240 posts about the problem so there is no need for someone to try and tell me how to clean my attys.
It doesn't Gooddog, and I wish people wouldn't do it but its seems to be human nature to do so lol
My experience of something won't and cannot impact on yours whatever it is, and my experiences on something aren't going to CHANGE yours either. (I'm using a generic you and me btw).
Some attys are goood, some are bad. It is what it is. Joye (AND the knock off people, cos they also do some bad 'uns) need to step up and sort their quality control before someone else does imo, and they lose their market by annoying all the vendors.
As for fixing the OPs problem; no-one can fix it.
We can offer a bunch of possible solutions but your ultimate solution may just be to write it off and try again with new ones. There's no guarantees alas that a new batch will perform better. Be lying if I told ya otherwise.
I've been lucky so far with mine, but that doesn't, as Gooddog points out, help you at all
(I'd also like to point out that this issue isn't confined to 510s, it seems to be atomizers in general, across the board, so it may be an endemic quality control problem in these factories generally)