Any update on this?
I too keep checking this thread to see if Lightgeoduck or any others have posted on the best methods for refilling the genuine Joyetech cartomizers. I have not yet tried the syringe method, but have been refilling my Joye cartos with both the condom method I described earlier, and another method I haven't really seen described, which is a drip method of sorts.
This drip method is simple and not as messy as the condom method. I simply hold the empty carto in one hand with the threaded end upwards. I take a slow drip bottle of juice and place a single drop on the tiny hole in the threaded end, and the juice disappears in about the time it takes the next drop to come out of the bottle. In less than a minute, I can drip 15 drops into the cartomizer this way. In principle, it's the same as the condom method in that it feeds the juice into the threaded end, but the drip method doesn't force the juice in like the condom method, it just lets gravity suck it inside.
The one thing I haven't yet worked out is how to prevent overfilling. Once it gets saturated inside, the excess juice starts to drip out the mouthpiece end. Even when I let them stand overnight with the latex caps put back in place, I still get gurgling noises and end up with juice in my mouth if I just pop the caps off and start vaping. So I am now removing the caps, wiping the whole carto dry with tissue, then putting my lips over the threaded end and forcefully blowing like a whistle through the carto, blowing the excess liquid out onto the tissue. This works, but I still end up with a little juice in my mouth from blowback.
Anyone have any better ideas?