1) Create a backup of factory.glb (it contains the factory patches) in the Gladiator_data directory!
2) Create/modify your own soundbank. Use 'save all' to overwrite factory.glb in the Gladiator_data directory.
3) The next time you load Gladiator your custom soundbank is automatically loaded.
Please note that the factory patches are copyrighted material. You are allowed to distribute only patches which are your own intelectual property.