Hi Wes. The only way I know to determine the category ID is to go to Posts – Categories and then mouse-over the category name. If that’s correct, then I think I’m using the right category IDs in the portfolios.
I’m wondering that since I’m also trying to block the Makers and Curators posts from appearing on the Blog page, I’ve added those two category IDs to the Genesis-Theme Settings-Portfolio Page Settings under the Category ID’s to exclude. When I try to remove them and refresh, the site won’t show any change. That’s why I was thinking that there was something wrong with caching in general. What do you think?