Well, one surefire way to eliminate the buzz would be to send me your moog. Another way would be to try to put some kind of shielding between it and the Rhodes pickups. I don't know much about the innards of a moog, but my guess would be that the electromagnetic radiation from its transformer is being picked up by the Rhodes pickups. Try a layer of thick tin foil under the Moog to see if it provides enough shielding.
--Larry
www.duoputty.com
--Larry
www.duoputty.com