Thanks for the reply, robbo. It wasn’t so much impatience as it was noticing questions asked after were answered, so I took that as my question didn’t need answering.

The link you site was the page I originally found for the project, which links to the “these basic instructions” page, which links to the “obsolete” videos of steps 4 and 5. Maybe it’s straightforward to figure out what is still valid in those videos.