TR-707

[Hatchetjob]

Hi does anyone know where i can find a guide for doing the pitch mods for the tr-707.I know this has been asked before on this forum but all info on this mod seems to have vanished.

I have established that it use 555 oscillators.I have know idea how one would go about making these .So if anyone has a detailed 'how to' it would be greatly appreciated.

Heres a pic of the guts of Diabolical Device 707

http://www.flickr.com/photos/24757542@N06/2474621408/in/photostream/

Regards.