I'd say you need to lower the castor and maybe even the CO, tooI've been working on a CP recipe for a mild, luxury soap. For experiments I use a one bar sample recipe. 35% Olive oil, 30% coconut, 15% castor, 15% cocoa butter, 3% jojoba, 2% shea butter. It came to trace within a couple minutes, popped easily from my recycled fancy feast mold but was a bit crumbly on the edges. I tested it after a week of curing and found it to have a stable, silky lather. I'm thinking I need to rework to decrease cocoa butter for a more pliable soap.