Thanks for this tip. I have incorporated your code into the appropriate WideTable class in the source code for the TECs. However, I am not sure what else to do to bring your code to "life".
.. from HackGUIPackageSource/HackGUI/TextFileComponent.java as I couldn't see why you would set the unit increment the same as the block increment, but no go.
If anyone is a java newb like myself then you can apply Kyles fix as follows:
# download and extract source tarball
# edit HackGUIPackageSource/HackGUI/WideTable.java with your favourite editor
find . -name "*.java" > sources.list
jar cf ../InstallDir/bin/lib/HackGUI.jar HackGUI/*.class
cp -b InstallDir/bin/lib/HackGUI.jar /path/to/nand2tetris/tools/bin/lib/