I needed to change two pages in the Mystic Heirloom 2000 pages: Page 897 and Page 923.
On page 897, I took the strip of 4 Youth Team Sports stamps and made them a block of 4:

On page 923, I kept the Flowers Booklet stamp connected:

Both pages are available in one zip file on my Google Drive, called the 2000 Retrofit Kit.
https://drive.google.com/drive/folders/0B5nZhycYzltRa21JWXYwOFBlSGM?usp=sharing