I've recently started making hp soap. I'm using the same recipes I've always used for cp. with the hp, I'll get about 3/4 of the way through using the bar and it will break and crumble. I've never had this issue with cp. any suggestions? I'll usually let them cure for a week or so before use but it's happened with bars that are 5-6 weeks old as well. The only difference between the hp and cp recipe is the addition of full fat yogurt and sodium lactate to the hp. Thanks!