OK, I tried to use EpubPressX to make epubs of the Black Marks stories, but it didn't get all the chapters, and it also put paragraph breaks at any italicized text.
So, I did it my old fashioned way of copy and paste into Word and then make epubs in calibre.
Few notes.
These don't have all the chapters of the versions on Amazon. If you look at his
patreon page, it appears he didn't post all the chapters there.
I'm not sure what "Wes" or "Ashley" mean at the start of any chapter, since it doesn't seem to change the PO