OK I am very late to the party, but just in case someone is looking for camlock parts I can point you to the Macit Corp in USA which makes cams and cam spindles for all the D type spindle nose.
I purchased some cam spindles and recently ordered a set of cams for my D1-3.
Thanks to everyone who posts on the forums. I have learnt a lot, but still have a long way to go.
Cheers
John