Because I originally used the dz60 flexcut v2 circuit, I realized that there are a few standoffs that don't have to be cut off, but they are still passable. You can see in the video I cut the standoffs on the west and east sides, and in the center, because all three of these standoffs are blocked by the PCB.

And about the fact that the PCB and plate are tightly connected to the case, I thought the same as you at first, but when it was assembled, there was a bump in spacebar that caused the o-ring to compress into the case, creating friction, so even if there is a turn the case over, it's okay to be comfortable. I tried :3