Do you have any rules that you follow for the order of pairs?I had a chance over lunch to check the video, and it's an interesting example of how post-DNF analysis can be helpful. The three edges-failed cubes were all off because I swapped two adjacent pairs. Clearly I do not always have strong enough ways of making clear the order of images in my scene. I've made this mistake many times before, and at Weston it cost me 6 points. So I need to work on this.
The other four errors were a mixed bag.