I was able to modify my CLK.alx file for my .126 and .144 by erasing the line:
<hidden JPN_Input="True">true</hidden>
and then it allowed me to select Japanese Character Support on my next update with the Desltop Manager...
However, in .147 or .150 I can't find the CLK.alk file in the loader files for either OS, and when I copied the modified CLK.alx file from the .126 or .144 into the loader files it doesn't have anything pop up!