I have a book in InDesign made of several pages sets. In my case I use Montserrat & Montserrat Light. I export to PDF. I want to be able to edit the PDF, so I set "subset fonts" to 10%. Still, when I edit the resulting PDF, it seems not to have all the characters. When I would change some text some of the letters switch from Montserrat Light to Montserrat. See how certain ones are thicker? What is wrong?