FIxing Page Numbering in a Book

have a book where everything was working correctly in regard to page numbering. I had printed it out several times. Suddenly, after making some speling and gramer fixes, the page numbering is all screwed up in the book and I need to find out how to fix it.

In Chapter 1, the third file in the book, the book Window now says there are 24 pages. The file has 23 pages, numbered 1-23.

(The book has pictures spanning the spreads at the start of the chapters so those chapters start on even pages)

Chapter 2, starts on the left side of the spread as desired but starts with page 25 on the left page.

Chapter 3, also starts on the left side of the spread with page 53. I get two spreads with 2 pages then page 57 is on the right page of the spread with no page on the left, something like this in the page display for the file:

X X

X X

   X (????)

X X

.....

Every page after the shift is then on the wrong side of the the spread.

How can I get InDesign to thing the file with 23 pages actually has 23 pages and not 24.

How can I get InDesign to make all the spreads start on the correct side of the page?