So this is how I leveled it. When doing the second round using the screw nuts, I have the leveling card under the nozzle. I raise the bed using the screw until I feel friction. I then pull the card out and in and out while raising the screw slowly. At some point, moving the card in, pushes the bed down because the card is thicker than the distance from the nozzle head to the bed. I then back it off slowly until the bed no longer gets lowered by pushing the card in. There is lots of friction, and as far as I can see it, it is the minimum gap that I can get using the card as a guide.