So I'm trying to find away around the well-known problem of clipping limits, but it turns out that it is not set by the publisher. In my own book — that I wrote — in Scrivener, exported to ePub, imported to Calibre — converted to azw3 and back to ePub — sent to my Kindle via Send-to-Kindle website … there is
still a 10% limit on the highlights I'm allowed to export. Amazon says this is 'set by the publisher', but as I'm the author and 'publisher', this isn't true.
I did this to test what causes the limit to be triggered. As far as I can tell, it's triggered by all books I Send-to-Kindle. Does anyone know if there's some metadata that can be manipulated to overcome this? I love the Kindle devices and have not found an acceptable alternative — don't like Kobo, don't want the distraction of Android. I hate to jump ship over this one little thing. But I need a way around this as I sometimes have a lot of notes and highlights.

and