Hi Griff, check out
https://youtu.be/lNsC8Mn6big
you should be able to find links to the remaining videos from there
Chris runs
http://ca-cycleworks.com/ and
http://www.ducatitech.com/
he also supplies
http://www.exactuk.com/about-exactfit-cam-belts/
If you want OEM call Craig or Luke at MotoRapido, they do efficient mail order and give 10% discount to UKMOC members