The problem I had with leveling was I didn’t have the spoiler board screwed down good enough. When I made my table I and mounted the machine I was careful to keep it all level then when I put the spoiler board on I was finding when cutting stuff it wasn’t level. I only put screws in the spolier board around the edge outside the cut area for fear of hitting the screws so it was humped up. I put some more down the middle and that got it level. I sunk the screws below the surface so hopefully they don’t get hit.