WHAT HAPPENS IF YOU MOVE A BLOCK MODEL DOWN BY 20cm?

This post is again for the QA/CP professionals out there. When the geo's build a block model where the origin is 20cm too high on a 10x10x5m block size, and you need the block model to be in line with bench elevations, do you reblock or just drop it 20cm...? If you are reporting on centroids, surely the answer should be unaffected as you have 2.5m to play with, and if you are reporting on partial percentages it should have a slight effect... #blockmodelling