[Divingduck]

@ dmorris68,
The problem with converting from PDF to Word is that you end up with a document what includes a lot of styles and that is, what is causing your format troubles in generating an Epub. The converters try to simplify the styles and often fail to find the right structure.
When I start preparing a PDF document to Epub I use an OCR to extract the text and image information. Then I save this in a Word document. So fare more or less the same like you are doing the conversion. Now take a look to the styles in Word. You will find that there are hundreds of them in the file. This is what makes the document looking so nice in Word but unusable for an Epub conversion. You need to simplify this to a set of styles what you can then translate into a CSS (only one font, a set of sizes, bold, italic, a set of headlines h1, h2, ...). Then you can save this file to .rtf or .html and use a converter like Calibre and or Sigil. By the way, if you have well defined headlines, you can use this to generate the TOC in Sigil with one click.