Need heavy counterweight for Thorens TD-147, help?

Hello,

Does anyone know where I can buy a heavy counterweight for a Thorens TD-147? There is mention of one existing in the owner's manual. I have contacted info@futurecat.net as directed by Thorens' website, but has not received a reply. If anyone has one for sale or knows where one can be purchased, please email me asap. Thank you all!

Bob