Red plastic dots on R lenses orientation knobs

[Guest]

Do you know how to get replacements for these (in the U.S.)? Every used lens I get is missing the red plastic dot.
Thanks

 

[Guest]

That was easy. Thanks! And thanks a lot for you great pages on the web, Doug (http://www.wildlightphoto.com/leica/). Beautiful pictures and great information about Leica reflex cameras.