[JohnnyBook]

I have my plugboard set to:
for all format "azw3" sent to device "Kindle2" {series}{series_index:0>2s| | - }{title}
for all format "mobi" sent to device "Kindle2" {series}{series_index:0>2s| | - }{title}

this for example displays on my Kindle:
Dexter 01 - Dexter Dreaming Darkly
Jeff Lindsay

Dexter 02 - Dearly Devoted Dexter
Jeff Lindsay

Dexter 03 - Dexter in the Dark
Jeff Lindsay


My sending books to devices is: {author_sort}/{series}{series_index} {title} - {authors}
which the files on the kindle end up named:
documents/Lindsay, Jeff/Dexter1 Dexter Dreaming Darkly - Jeff Lindsay
documents/Lindsay, Jeff/Dexter2 Dearly Devoted Dexter - Jeff Lindsay


But this should not matter, it only sets up the name format on the device. NOT was it displays in the book list. [EDIT] that format is old, from a couple kindles ago, I would not use that format if I had paid attention to what it was when I set up & loaded up my latest kindle.