Originally Posted by rstoothoff
Thanks for the suggestion, Grand Mouse. But how do I unpack the .azw3 file? I have Mobi_Unpack_v047: do I just drop the .azw3 onto the Mobi_Unpack.pyw icon? Then what do I do? I've found that Calibre does a much better job of converting .epub to Kindle than Kindlegen does (i.e. using Kindle Previewer). And as for the InDesign plug-in, well the latest version is better than earlier ones, but it's still pretty flaky (flakey?)
Double-click the Mobi_Unpack.pyw script. In the dialog, select the file to be unpacked and any options (none needed, I think).
Run the unpacked azw3 through kindlegen. The resulting file should have a KF*/azw3 part pretty much identical to the original, and a mobi generated from it.