Double printing on creality laser fancon 10w

I have a Creality falcon 10w, it started printing double, I tightened the x axis belt but it is only getting worse. Do you have any suggestions for me?
This was the first print


This was the second print after tightning

Thank you

If you turn off bidirectional scan, and the double goes away, check the set screws on the Xaxis motor coupling.

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