[slowsmile]

"I noticed too that when I ran the plugin and did not request the serif language option, it added it anyway. "

This plugin will only remove all font declarations in the CSS and replace them with default serif throughout in your epub if you chose the "Convert all ebook text and headings to serif throughout" plugin option. I've just tested this option and it seems to be working as it should. However, if you haven't explicitly declared a particular font within your text or heading style then this plugin will convert that text or heading to serif by default. The rule here, when using this plugin, is not to assume or use undeclared default styling but always explicitly declare the font(with a fallback i.e. serif or sans-serif) that you actually want to use in all instances. But on further consideration, what I might do is change that so that, rather than my plugin forcing an unwanted default font on the user's epub, it allows the plugin user to determine their own default font. So I think that I'll change that and put out an update for this soon which will be more in line with what you want as the plugin user.

"By Text View do you mean "Book View"? My 9.8 Sigil only has Book and Code view. And I saw no way to find a minimum width on either. "

Yes, Text View = Book View.

"Hey, what I've been doing is making a copy of my most recent epub and then running your plugin on the copy. Then copying and pasting the HTML info for the images into the original file. To do that, I don't need to do anything with CSS, do I?"

You shouldn't have to worry about the CSS if you do the above because I avoid using classes or styles(in the CSS) and always use inline styling for the image styling instead. So, yes, you should be able to directly copy and paste the image formatting without problems.