If you want perfect converstion of a PDF file to Kindle format for any kind of Kindle, see this:
If you really want to convert PDF files to Kindle format, first subscribe here to Adobe Export for $ 20.00 per year:
Then send your resulting Word file after your own editing to your Kindle using the email address on the Manage Your Kindle page at Amazon.
That will give you a perfect Kindle file allowing Kindle fonts, highlighting, notes, bookmarks, etc.
I posted this in another thread as well because it gives PERFECT results.