I made a batch last night that was baking soda, SLSA, kaolin clay and corn starch. I am at work but I believe the proportions were 1 c of both soda and SLSA and 1/4 c. of Clay and starch. Mixed with FO and glycerin till it is like play dough. In the past my mixtures felt almost gritty. or it would harden up to a brick and not bubble well. This one was nice and smooth and I am hoping this comes out well. It bubbled well last night but i totally have to cure it. it was getting firm this morning but still had a bit of a soft touch to it. I used pink sugar FO and colored it pink. It is now pink with brown spots, but I expected that cause of the pink sugar. is there a rule of thumb for the FO? like with CP it is 1%