I boil and dryburn all my attys. The LR306 is the hardest to dryburn without popping. I've been boiling and dryburning attys for 6 months and I've only popped one, a pretty new IKV LR 306. The best way to dry burn is using the pulsing method where you hit the button, pulsing, to keep the coil just at the beginning of a glow. 20 seconds is about the limit for most attys and for sure the LR 306. The reason I popped my LR 306 was because I pushed it beyond the 20 seconds. I let the atty cool down naturally between the pulsing dryburns. I stop doing the 20 second pulses when no more vapor comes off of them and they smell "new".
Before dry burning I always wrist flick the cleaned and/or boiled attys, blow out, and then let them dry well; in my case I set them in front of the Notebook exhaust for a few hours.
I have a good track record keeping attys going well for the two of us, using my cleaning methods. A couple of people have asked me to write up and post the technique but I just haven't had time.
In worst case scenarios, the wick that goes up to the bridge, on an LR 306, can be zapped with a hand held torch. A lighter won't do it as it will only blacken the wick. It is not hot enough to turn the scorched gunk to ash.
I am in the group of people who consider the extra wicking to be an advantage for the vaper and for the longevity of the LR 306. They work better and last longer if kept as moist as possible, while being used (not while stored though).
Another thing to keep in mind when storing cleaned attys is to have them completely dry and to keep moisture away from them. A good thing to have in the storage container for attys and cartos is desicant packages. You can find them in many pill bottles or order some from amazon. I've read, on ECF, of some people having their attys "rust" during long term storage.
Alice