I'm thinking the Python scripts probably are the best way to go, but they are probably too intimidating for most. And even people like me who are not intimidated by them just don't want to bother with all that command line entry, not to mention the trouble of finding and installing everything needed. I've got it installed and have had for months and months, but i hate bothering with it. I use calibre and it works fine with books on the K3s and K4s. I still say the Fire is buggie in this area and we are just going to have to wait until syncing gets corrected before this will work consistently.