Help Me! Let's Play Daedalian Opus!

Daedalian Opus is a Game Boy puzzler from 1990. I don't remember exactly why I thought it would be a good idea to do a Let's Play of it back in February/March 2013, but it's pretty tough so I might just have been looking for a way to get some help without just looking up solutions in a guide. There's a bit of audience interaction in this one with members of the Talking Time forum. I won't be copying in their comments, but I'll probably refer to a couple by name which won't make a lot of sense on this site.

Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7