Hi dennisdd,
I actually use an app called DriveSync/AutoSync
(
https://play.google.com/store/apps/d...rivesync&hl=en )
to synchronize folders on my Android devices, including my Mimas Likebook, with Google Drive.
In this way I synchronize a folder where I keep my PDF files and also the folder where the Mimas stores the notes.
It works very smooth and reliably.