resize recipe to fit mold size

[lsoriat]

Hello fellow soapmakers. I'm using an existing recipe that I want to resize to fit a another loaf mold. I've checked the box to resize the recipe and then chosen "by total size" and selected "grams". I entered the total grams as 1300, but on the right of the page where it lists RECIPE TOTALS, it says my batch is 1429.94 grams. Can anyone explain to me what I'm misunderstanding here?

 

[Yooper]

I cannot recreate that- when I try with ounces and grams, it’s working.

Well, it’s 18 grams more probably because I’ve added a teaspoon or something or needed a bit more water but here’s mine;


Which recipe of yours is doing this? I can dig into it.