Mechanical problem Y-axe?

I am having the exact same issue with my 24W, which all started after upgrading from Jouneyman Original to Jouneyman Elite. See post Laser engraving jittery curves - Accessories / J Tech Laser - Onefinity CNC Forum. I haven’t had time yet but I will be doing some tests this weekend as suggested. I hope you find a solution that may also help me.