I have been testing out the use of a vibrating toothbrush on my dewicked, debridged lr 306s. So far it is working very good. I soak them in vodka, then let them dry. I do a quick dry burn and when they cool down, I run the atty under water and use the toothbrush. The 306 has easy access to the coil and I am able to remove the crud. I then soak it in vodka again and let it dry. It is good to go after that and pretty close to new condition.
I have tried all of the soaking methods and they never remove the crud. If you rotate your attys and do this method, the atty will never build up a lot of crud and all I need to do is a quick dry burn. I am still testing for how long the attys last with this method, but I haven't had one pop out on me yet. For me, I can always have an atty that glows evenly and quickly.