You can see the screws I used are way too big. I had 6mm and 18mm in inventory and had to use the 18mm ones. Realising this gap in my inventory I have just now purchased some 8mm, 10mm, and 12mm ones to flesh out my collection.
This popped up on Hacker News today: Are people with dark personality traits more likely to succeed? — interesting read. Light forces for life!