Are the "square" holes the right size? Im trying to decide if the infill is short or the perimeter is wrong.
Is that one perimeter?
Can't be missing steps or it would get progressively worse.
Can't be retraction as it only happens at one end of a run.
Are the X and Y motors the same type and have the same step settings. Its almost like a position error on one axis but it doesn't happen on both infill and perimeter.