Test going on, the CD10 and CD12 are behaving the same way, curling and maybe are developing mushrooms (can't say exactly now). The tumblers are 3 inch wide, after two hours the melt pool is not full, larger with CD12, the hot throw is good in both... The small tumbler 2.5 inch wide is going with a CSN9 but it seems a little underwicked. I will let them burn and see. The wood wick today is not so good small flame and no throw.