Urrgggh! I spoke too soon! I had not yet looked at the files on my Kindle! The BeCyPDFMetaEdit program DOES NOT edit the MetaData in a manner that Kindle finds acceptable!
Yes, it does create and edit the "Document Information Dictionary" - but not in a structure that Kindle likes or can use!
BeCyPDFMetaEdit creates the DID exactly in this manner:
<<
/Author (California DMV)
/CreationDate (D:20110103090206-07'00')
/Creator (Adobe InDesign CS4 \(6.0.4\))
/ModDate (D:20110701201212-08'00')...
However, Kindle seems to be only able to Parse the DID if it is created like this:
<</Author(California DMV)/CreationDate(D:20110113094150-07'00')/Creator(Adobe InDesign CS4 \(6.0.4\))/ModDate(D:20110624002212-07'00')...
That is to say, the Kindle will only parse the data if it is one continuous line of data, but BeCyPDFMetaEdit inserts line breaks between each of the pairs! This makes the DID unreadable for Kindle!
Back to the drawing board. I'll see if the Binary Editor can fix this by removing the line breaks -- although I doubt it, as it was unable to create a viable PDF file if I manually inserted my own DID...
I'll get back to you in case someone else decided this is of interest!

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Answer is NO! The binary editor will remove the extra line breaks and spaces -- but then the file becomes corrupt and cannot be opened by any program -- not even BeCyPDFMetaEdit! So that is not a solution.
Next I will try PDF Tools and see if it can create/edit the DID in a manner that is acceptable to Kindle...