Adding Custom Vault to Custom Fabricator

Hey All! I’ve made my first custom vault and my first custom fabricator; yay. Now for the boo; In Crafting Requires Inventory Component for the vault I’ve changed it from the Old Fabricator to my Primal Item; after learning all engrams the vault does not show up in the fabricator when I go to craft it. I’ve tried adding it to the Default Inventory of the custom fabricator and it simply makes it so that it can be crafted even if you have not learned the engram. Does anyone have any ideas as to how I can fix this little issue? Thank you.