Short belts on M200

It appears that my short belts are a bit loose, one more than the other, the prints are no good - they have lateral offsets, just want to confirm that the belts need to be replaced.
Also, my front calibration screw comes undone during 6 hour print, its not falling out but it is :unscrewed" by 10 turns as opposed 1-1.25 turn it is set at the calibration.

Hi. if you experience layer shifting, please start with the axes maintenance. Still, if the issue is not resolved and you can see the difference between short belts - then yes, they might need replacement.

As for the calibration screw - it should not get loose after one print. It seems to be worn-out and should be replaced.

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