I just came across an article on vaping.com that was sent me through a newsletter from this forum, about "How often to change coils" <-- this article was really poor and just generally said vague stuff like "if your coil has worn down" or "stopped working properly" or your juice doesn't taste as it should, recommending to change coils (!) weekly or at least much more often than I do. (I am a MTL vaper and I vape at a low 11 Watts, using standard 7-8 wraps self-wrapped micro coils which last me MONTHS....if not an entire year or longer) The article didn't provide any insightful info whether changing your coils is needed and what the reason for it should be. Mind you: When I do "maintenance", that is when I change my wicks, I also "burn off" coils at 16W or so...a few times and even brush them afterwards. But I only rarely actually put on a new coil. Do other folks change their coils often? If so, what is the reason? Do you think there is a difference? Related: To you actually (dry) pre-burn your wires before you use them to vape? Someone once mentioned there is a coating on wires which needs to be (?) burned off first. Here too, does everyone do that? Ty!