Hi Marcia, the indents for numbering should be set using the Define Multilevel List dialog. You may be able to do it in the numbering dialog as well.
Number Alignment by Suzanne Barnhill, MVP


This is not set in the Paragraph formatting or Style dialogs. How to create numbered headings or outline numbering in Ribbon Versions of Word by Shauna Kelly

Thank you Charles. Early on I had set the alignment (-.03) and text indent (.25") in the multilevel list. It is the indent at the paragraph in the Headings that keep on changing from .25" to .28". The difference of .03" is not so significant but still a puzzle.