@MacEvansCB - take a look at this thread:
https://www.mobileread.com/forums/sho...d.php?t=132726
In particular my posts and the responses towards the end. To summarise as I understand it, the problem is that the existing PDF engine does not retain the indents information, so punctuation is the *only* option it has. The new PDF engine will retain this information, but it is not yet finished (and seems perpetually on hold in lieu of other priorities).