How’s the rigidity of the z/y axis? I’ve got a bit of an issue on the one I made where the y axis can twist slightly and causes the z axis to be a bit higher /

How’s the rigidity of the z/y axis? I’ve got a bit of an issue on the one I made where the y axis can twist slightly and causes the z axis to be a bit higher / lower depending on if it’s pushing or pulling through a cut.