Worked on stabilizing AMS mapping for filament presets in the CodeByZach/BambuStudio repository, focusing on resolving a user-facing mapping issue related to tray identification. Addressed the problem by adjusting the default tray_id initialization in C++, first changing its value to prevent mapping errors, then reverting the change after a cloud-side fix was deployed. This approach ensured that client-side behavior remained consistent with backend updates, reducing mapping errors for users. The work involved careful configuration management and embedded systems knowledge, resulting in improved reliability and maintainability of filament preset handling without introducing new features, but by delivering a targeted bug fix.