Actually, the Sigil route was too much for my little pea brain, so I just gave up on renaming the Hamish Macbeth series. Something about Loc 1 ignoring the series info that Calibre is supposed to set.
I just had a similar problem with a bunch of Sir Walter Scott books (all mobis) from Project Gutenberg. I assigned "Waverley" as the series name for a lot of books, but only some of them had "Waverley [01] -" etc. added when I sent them to my Kindle Touch. A lot of them in that series had NOTHING added to the front of the title. Again, sometimes the plugboard works and sometimes it doesn't. Strange. BTW, I saw this inconsistency after changing the template to the following, exactly as specified in Kovid's sticky post:
{series:|| }{series_index:0>2s|[|] - }{title}
Also, where the series info was not added to the name of a book, changes that I made to the name in the metadata are ignored. More specifically, I changed the name "The Fair Maid of Perth / Or, St. Valentine's Day" to simply "The Fair Maid of Perth" in the metadata. This book appears on my KT (1) without the series info at the beginning of its name, and (2) with the full, unshortened name, as if I never changed the metadata in Calibre.
Any ideas how to fix these problems?
I am using 0.8.61.