"John Clonts" writes:

/* jcc 7/2/04 changed from ProjFalseOriginLongGeoKey */
GTIFKeySet(psGTIF, ProjNatOriginLongGeoKey, TYPE_DOUBLE, 1, //

I had considered doing that too. I hesitated because I just don't know
enough about it. If it works for you, however, I'm happy to do it.

Please try the GeoTIFFs now. Do they work the way you expect?

If not, please take a look at the TIFFs in these directories.
http://aviationtoolbox.org/munge/data/masked/
http://aviationtoolbox.org/munge/data/warped/
I'm regenerating the whole set with the modified GDAL.

Thank you!

--kyler