It's rather a small one, but slow and occasionally steady is better than stopped. I finished Simplified Assignment 12 at 60wpm. (Each chapter has 6 assignments, each assignment has 6 passages, and none go to St. Ives.)
Now to read the next assignment, including cold-reads of the plates until they're up to speed, then create dictation files.
I'm creating a full set of dictation files and putting them on my site as I go. The quality is okay for a free file you listen to only a few times. What speeds would a new student need for each chapter, including overclocking? It's easier to add a few more speeds on the first pass than to go back and add them later.