I noticed that the angular blocks with the metal thing (Block 2-10-6/2-10-7/2-10-8) don't connect to the normal angular blocks (Block 4-1-5/4-1-6/4-1-7). They leave a small line between them, what looks a bit ugly . That all was done without blockmixing.
Screenshot: https://www.dropbox.com/s/q6e72xay77uj0 ... g.jpg?dl=0