Falcon2 making noise

I’m able to upload a video, but when I try to get my Falcon to return to its Home point, it makes a grinding sound it only does it on one axis
I have tightened up all the three belts
Not sure what to do now any help would be great

That is weird indeed.
How about the carriage on which the Laser is installed?
Can you check if the concentric nut (when you remove the Laser unit) isn’t too tight?
Also, check for deteriations on the rubber wheel on that same carriage.

It’s actually weird it does this only in one direction.
Can you figure out where the noise comes from? The motor? The carriage?