I want to make HP soap, but first have a question I hope someone will help me with. As I understand it, superfat is added after the cook. Also, I understand that saponification continues for a little while after cooking. On the Lye Calculator,then, do you set the superfat number to “0”? Then calculate the percentage of oils you want for adding superfat after cook? If you set SF in the Lye Calculator is there danger that the mixture will not completely saponify? (Not counting on testing)