Help in converting a MSFT Word Doc to HTML suitable for Amazon Kindle

I need help with a conversion from MSFT word to HTML in the format that is acceptable for Amazon Kindle. Amazon Kindle requires a conversion from Word that uses file type: Web page, filtered - within MSFT word. Additionally, margins for Kindle are very narrow. Kindle has its on structure that takes HTML and re-compiles it. I have a 160 page word file. There is one Exhibit page that is not correctly converting to HTML. The rest of the word file displays correctly and does not need any change. It appears to have narrow margins appropriate for Kindle when displayed in Word, but the HTML version when converted has much wider margins - too wide for the Kindle format. I need the corrections for the Word version so that in future editions of the book it is correct. When run through MSFT Word to compile in HTML the exhibit has correct margin. In summary, I need someone to troubleshoot why this one particular word page isn't showing correctly in HTML and provide the EXACT changes to Word so that it will correctly convert using MSFT Word conversion