Broken off? Do you mean the screw is sheared off or just plain missing? I have an authentic, somewhat cannibalized, Peavey Cirrus gold tuner body (complete with "Y" button) that you may have. If you'd like to upgrade, I'd go with the Hipshot Ultralites like this:
If going with a repair of the existing tuner, please send me some detailed pics.
Thanks
Riis