I am amassing my fleet of Benchy's trying to troubleshoot my printer. Of the last 7 (soon to be 8) only one large issue sometimes occurs, there is a shift along the x-axis (+) that, when it happens, always occurs at a 31mm height. This happens for about 2/3 prints. I'm kinda stumped, as by this time the printer bed has cycled through that area 100+ times so I wouldn't think it would be a belt issue or I would expect it to occur more "randomly". I thought maybe it was an issue with the stepper driver current, but it happens at the same height on both 0.2mm and 0.12mm layer thickness prints. My (potentially faulty) logic was that if it was a current issue it should show after a given amount of movement, so lower on the 0.12mm. I've checked all the belts, grub screws, etc. Any ideas?
"Acceptable"/Shifted Benchy's; left 2 are 0.2mm, right 2 are0.12mm layers
Shifted 0.2mm layer and 0.12mm layer