Noob Question: Gear Types

[Diaz Ex Machina]

I'm trying to make a new Gear category, "Special Substances and Items", where are listed mainly alchemical items. I've created the separator and the items, but they show above everything else, mixed with the - Custom - items. How can I put my new category further down, say after "Adventuring Gear"?

Thank you in advance for your help and time.