Ladies and Gents,
As promised, attached below a link to a the FB/EK Holden timing gear replacement enthusiasts guide (with thanks to those on the forum who commented). It contains practical information on identification of timing gear failure, disassembly and reassembly of FB and EK Holden timing gear assemblies. It has been written to explain both workshop-type practices, and those used at the side of the road.
Whilst it is written with FB/EKs in mind, 99% of the content is valid for FE/FC grey motors.
http://www.scribd.com/doc/58349283/Timing-GearCheers,
Harv.