[Yoda]

...and finally 12-3-0 #24 (even though he says that no Zone#1 elements are listed)

The Mechanical Checklist For All Strokes (12-3-0) was introduced in the 4th edition. At that time, it included no Zone #1 (Body) elements (other than the basic Body Position and Balance at the Finish) and the introductory text stated that fact.

Later, Homer added the 'Clear Right Hip' checkpoint as the last item in both the Adjusted Address (Section 2) and at the Top (Section 6). However, in doing so, he did not change the original introductory text. Hence, the inconsistency you have noted.