I have since tried CD 12, 14 and 16. All of them don’t give me a full melt pool, but what I’ve noticed is that CD14 and above are all producing black smoke while burning. And the hot throw is really faint. CD12 doesn’t come close to a full melt pool after 4 hours, but after the second burn, it leaves about 1/4 inch of wax around the glass. I read a few forums and most people using the size of my jar recommends CD10-12, but they all do flat candles. I’m wondering if my melt pool is because of my whipped candles. Is CD12 too small for my jar?