Hi there! I see you're having an issue with texture alignment when creating a custom block model for Minecraft 1.20+ using Mods Addon Maker. You mentioned that the texture looks fine in the editor, but part of it shifts in the game, right?

To help solve this, I’d like to confirm a couple of things first:
- Are you using Blockbench or some other tool integrated in Mods Addon Maker to create the model?
- Is the texture shifting consistently on a specific face or part of the block?
- Have you checked that your texture image size and UV mapping coordinates are correctly aligned for the new Minecraft 1.20 block model format?

In the meantime, here are some common steps to try:

1. Check UV Mapping: Sometimes textures appear correct in the editor but show misaligned in-game if UV coordinates (how textures map to model faces) are off. If using Blockbench, check the UV editor and ensure the texture regions correspond exactly to the parts of the block model.

2. Verify Texture Size & Format: Minecraft 1.20+ often requires textures to be in specific sizes (like 16x16 or multiples) and in the correct PNG format with transparency as needed.

3. Model Parent & Format: Make sure your model JSON references the correct parent model and follows the 1.20+ format, since Minecraft has updated model structure in recent versions, which can affect texture placement.

4. Atlas Texture Usage: Recent Minecraft versions consolidate textures into an atlas for performance. Incorrectly mapped or referenced textures may cause shifts. Ensuring your resource pack handles the atlas properly can fix this.

5. Test with Vanilla Textures: Try applying a known working vanilla texture to your model to see if the issue persists. This can help isolate whether the problem is model UVs or texture specifics.

If you’ve already tried that or want more detailed help, please let me know any details about your workflow or model files. I’m here to help get this looking perfect for your 1.20+ custom block!

Are you satisfied with these initial steps, or should I guide you through checking UV maps and model JSON specifics in detail?