I'm trying to edit existing Secret syncs, but there doesn't seem to be an option for this? Do I just need to delete and re-create them?

Hi @Tyson Kopczynski! You can edit them, you just have to click into the sync and edit from this screen: Thanks!

OK... I'm not joking... but "Edit Sync" was not an option when I posted it. Now it is. ¯\_ (ツ)_/¯