First Print Issues
Check y-belt tension, y-belt idler and y-belt pulley orientation. Make sure the grub screw is fixed against the flat part of the motor shaft.
Test y-axis belt like: https://help.prusa3d.com/guide/2-y-axis-assembly_165795#167627
If at first you don't succeed, skydiving is not for you.
RE: First Print Issues
Thanks I'll give that a try and report back.