Guys,
Thanks for all your valuable suggestions. I did look at Leather shops, brake shoe rivets and Ebay, but wasn't able to find the proper size, shape and material yet. To be honest....I was a bit overwhelmed about the number of rivets available, making it rather difficult to find the size and material needed.
With the new leads and ideas you guys gave me, I am sure I can find something suitable.
@Mike; I envy people who can make there own parts on a lathe, but I am not sure that is something for me.
@Jason; do you happen to remember the Ebay sellers ID?
@Richard, Barry, thanks for the links. Barry, that US supplier has some nice stuff, indeed! ...."rivet, rivet"

@Lynn; Yes, brake shoe...that are quite close in shape and size, but I hope I can find Steel rivets. If not, the copper ones seem like a good alternative.
@Bob; it's funny that you mention the seal around the shift tower; I was just looking at this last week. I have seen more CMP's with a seal fitted like you described and I quite like the idea. Any idea if there was a seal fitted originally? I think I have also seen a cab11 with a canvas piece around the lower end of the lever(?)
thanks guys,
Alex