Flash Forge dreamer y axis issue

[Todd-67]

This problem just showed itself out of the blue this weekend. I was trying to print some parts for work that were not coming out well. I assumed that my glass bed was working loose from the clamps mid build so I decided to print new clamps and I found this. These two parts were printed on separate builds and mimic exactly what I was seeing on the other parts I was printing. It is y-Axis only shift that returns to normal after this sequence. Slicer is Simplify 3D. Everything is tight and the bed is solid. Any ideas where to start?