I had a bad leak yesterday on one of my Orchids. First bad leak with these. It kept pouring out the air holes. Took it apart and found the wicks were not in the channels on both sides. I guess when I screwed the chimney on, it grabbed the wick ends and opened the channels. I was trying to use larger diameter coils and I guess I used too much Rayon. I trimmed it up and all is good again.