Bob, was waiting for the Internat's to complete and see if anyone there might have a one. If not, CMDi was the next course of action, considering the three Mac .21 OB I purchased came from them directly. Two of them were sold off over the years.
Andy, thanks for the update. This motor is the last to be used, doubt it's had a gallon thru it yet. Will most likely be calling CMDi tomorrow for the head.