Reformat 500-Page Manuscript

I have a 500-page narrative already laid out in Microsoft Word. My new publisher has issued exact margin specifications, and once those margins change the line count per page shifts, pushing chapter headers, footers, and page numbers out of place.

What I need
• Apply the provided margin size adjustments throughout the document.
• Keep each chapter header in its current style yet reposition it so it sits correctly on the new pages.
• Verify that automatic page numbering, section breaks, and any running headers/footers remain accurate after the shift.
• Make sure the table of contents and cross-references update cleanly.

Key details
– I will supply the Word file plus the publisher’s precise margin specs.
– No redesign is required; the book must look exactly like the original—just aligned to the new layout rules.
– The work ends when the manuscript opens in Word with zero layout warnings and passes the publisher’s template check.

If you are fluent in advanced Word formatting—section breaks, styles, TOC fields—and can turn this around reliably, I’d love to work with you.