I've been dripping for awhile using a cotton wick and i love it. My question for those with more experience in this is how many flavors will you use on a single wick? I constantly change flavors and dripping is great for that, but after the first couple hits, on a dif flavor, it starts to get a mixed taste. Sometimes that's great other times not so much. Ie I'm curious if there's a general guideline on this.