I'm getting to exactly this part of your tutorial.
I have changed "section" to 24, "height" to 0.8, and when I backslash the numbers from "top x radius" so I can input 0.1, the PC becomes unresponsive. Every other section is in the default state. No screenshots, because the PC becomes unresponsive, and I have to switch power off from my laptop to get it running again.