Hi, I was dry burning my coils before wicking first time and every time before changing the coils. I never wash and brush them. I just blow them off then wick. I recently read conflicting ideas regarding the health consequences of dry burning. What do you guys think of it? Any recent development in this area supporting or opposing dry burning coils? Is there an alternative to this process, such as ultrasonic cleaner? If yes what do you recommend? Preferably something small and portable. Thanks!