I'm the same as the others. Not much maintenance required for mine. Still using the original atty's from my starter kit. That may have a lot to do with the fact that I use just VG, Nic and H20. Using other liquids does seem to clog it faster.
I'm attempting to clean one that was giving off very little vapor after using it for 2-3 tanks of cappuccino flavor liquid. If I held the button for a second before drawing it helped but the vapor was still insufficient. I soaked it in GG Vodka overnight occasionally swirling it and gently blowing some liquid from the battery side to the tip side of the atty, then rinsed with hot water blowing out excess liquid gently. I then connected a battery and cooked it for 2 sec, 5 secs, 5 secs, 5 secs with about a minute in between (trying to cook the coil). Quick rinse in same vodka and a couple blow throughs to get off any crusty residue from cooking, followed by a hot water rinse and gentle blow out. It is currently drying. I plan to dry it overnight or longer.
For the first use I'll put in a full tank and pull 4 times hard to get the liquid into the atty before firing.
I'll let you know in a few days if I ruined it!!!!
Stick to the clear liquid or buy a few spare attys if you use dark fluids,either way its still cheaper than smoking.