When I was an engineer, my brother the machinist made twice as much money at JC manufacturing. They were really high end, making expensive parts per complex blueprints. They had a dozen different mills, some really big ones. They never leveled any machines. They put rubber under the feet to keep the vibration down.

So I may have leveled some of my machines 20 years ago, but I am just doing gunsmithing, so if JC does not level, I sure don't need to.