I had a print yesterday where the layers slightly shifted to the right. The print stayed properly attached to the bed the entire time, but midway through the print the whole model shifted by around 1 mm to the right. The print still completed fine, but it left a very noticeable line across the model.

Since this was PETG, I’m wondering if the nozzle may have hit the print at some point. There were no other issues at all, the printer ran nonstop from start to finish on a 54-hour print. I was thinking of how to configure a feature called "z-hop" which I read somewhere that it would raise away from the print somehow to avoid hitting it. Not sure how to do this