Some drums are missing from the mix in some Virtual Drummer DEEP presets

This is a known issue in version 2.5.0 (this version added NKS support).

Workaround: Roll back to an earlier version.

1. Uninstall DEEP 2.5.0 using the menu to the right of DEEP in the UJAM App
2. Download and run the standalone DEEP 2.4.1 installer here
3. Sync/Refresh the UJAM App (it will now show version 2.4.1 installed, and you can ignore the option to Update DEEP)

Please Submit a Ticket to UJAM support if you have any questions or concerns.