Sedge has a good method for cleaning coils that I have been using, at least partly: I run some hot water over then and give them a bit of soak with alcohol. Then I gingerly scrub them with a soft tooth brush--I may polish with a bit of Scotchbrite, and then re-wick. A coil can last me a good long time this way, although a fter a few treatments, I get the jones for a new one. I also find that "Crazy Wire" nickel wire seems a good bit more durable.