The frames didn't scramble when I was arranging them in order. As I removed each one and placed it on the bar, it left a space. When you move frame #1, there will be a space between #13 and #2. The same holds true for frames 3, 7 and 12. IOW, after removing the 4 you mentioned, you should see "space, 2, space, 4, 5, 6, space, 8, 9, 10, 11, space, 13". The trick is to make a description of some of the frames and remember where they were so you don't get mixed up.