It seems like you are experiencing an issue with your CRtouch and custom firmware on your Creality Ender 3 S1 Pro printer. Here are a few troubleshooting steps you can try:
Double-check your CRtouch installation: Ensure that the CRtouch is mounted properly and securely on your custom fan duct. Make sure it is not interfering with any other components or wiring.
Check your firmware settings: Verify that your Klipper firmware is properly configured for the CRtouch probe. Check the probe offset values and ensure they are correctly set in your Klipper configuration file.
Update or roll back firmware: Consider updating or reinstalling the custom firmware you are using to ensure compatibility with the CRtouch probe. If the issue persists, try reverting back to the stock firmware to see if the problem is resolved.
Re-calibrate your bed: Use manual mesh leveling or another bed leveling method to ensure your bed is truly trammed. Check if the issue persists after re-leveling ...
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