Disable / lockdown "create custom tool"

Im doing a custom install via the "Adobe Customization Wizard DC", disabling all kinds of things.

Everything set up in the Wizard works, except disabling the "Create custom tool" tool.

I checked the box to have the "Create custom tool"  disabled, and after installation it also added the registry key. See

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Adobe\Adobe Acrobat\2015\FeatureLockDown\cAcroApp\cDisabled]

"a0"="CertificatesApp"

"a1"="CustomUIApp"

"a2"="SendAppFull"

But when I open Acrobat after the installation (and reboot) its still showing and usable.

Is there anything else that needs to be done to disable this tool?