Loses position engraving

hi. I have a new S30 Pro Max and sometimes don’t engrave well. I think it is maybe because of a tight X axis belt because I Sense a little resistance moving the module with my hand in some points or maybe a firmware problem because sometimes the machine don’t power off in the button only when I took the power cable off .
Any tips? I use lightburn
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Here is a guide on how to check the complete mechanics: Guide to mechanical adjustments and maintenance Go through and check if everything runs smoothly.
Next, what settings did you use?