bunkie68. I make these and love them. When I first started making them, mine did the same as yours did. Try letting the cocoa butter mixture cool completely down, but not solid, before adding the citric acid. If the mixture is to warm, the citric acid will react. Someone asked if you had to put them in the freezer. The answer is no. I've used both methods. I prefer the way the tops look when I allow them to harden at room temperature. Try both ways and see which one you prefer. Using .5 oz. is probably good for a standard tub, but mine are slightly larger. Whenever you use an oily product in the tub, you have to be careful of slipping. The reason for not using an excessive amount is to avoid an oily mess.