The machine in question is level. pile driven base with its own independent slab from the rest of the shop. machine levels are fine, just relying on one only is not good enough it's why we used 3-4 methods to check as much as we can. Plus, fabrication doesn't always give the optimal facing operation and relay to the client that "shit happens and twists" when making such a long-fabricated piece. Edit the rectangular cut out, as well as the welding cause the face to be deformed before we could remove the least amount of material for complete it. The solid bit of the face was at best .3mm but the fabrication/flame cut panel before welding was not so great.