OK, I went with "C" batteries. A fair amount of Routering and fitting to make it work. Broke open one of the AA battery holders for the connectors, spring and switch. Seems to be working better. Just ordered a "core box" router bit from MLCS that is 1" in Dia. that is the same size as the "C" battery, Once I make a template for the cover plate route out, things should go faster.