Hello and thank you for choosing the Creatr HS for your printing needs.
If you see the screws at the end of the Y shaft mounting bracket move, do not be alarmed; there is nothing wrong with the printer.
These screws, located on the mounting brackets, will sometimes move when your machine is printing. This movement allows the belts, which transmit movement from the Y stepper motor to the assembly, to align themselves at each end of the Y assembly.
Therefore, resist the urge to try and tighten them.
Thank you for checking out our offered solution. For any other questions regarding technical issues with the Creatr HS, please do not hesitate to contact our Leapfrog Support Team.
We wish you happy printing!