A user on Reddit explains that the RYS tool breaks Gemma 4 models if the `layer_scalar` value is not adjusted during upscaling. Because this scalar is applied multiplicatively at each layer, failing to adjust it results in an incorrect model.
- The correct adjustment formula is `s^(1/N)`, where `s` is the original scalar and `N` is the number of times a layer was duplicated.
- A pull request implementing this fix has been submitted to the RYS repository for reference.