I'm trying to use my 1 functional atty as much as possible to put off placing another order, but I'd forgotten to dewick it prior to breaking it in last week and it's really starting to sour. It's next to impossible to get all those frickin' threads out once they've been used for a bit.
I know this is for the Joye 510 carto thread but just offer this suggestion. I much prefer atomizers (901 and 801 over 510) over any style cartomizer including the Joye and CE2 and I have atomizers at 8+ months now and still good and not sour. If you've got an atomizer that's soured try a PGA or 91% isopropyl alcohol bath first and if that doesn't help then a dry burn. You can find lots of info on ECF if you search for "dry burn" and you should be good to go.