I agree with Stan, takes but a little time to make one, I did with my
cam shaft pulley when i dropped the key on the gravel driveway. It
worked fine for a year until i replaced with factory made key.

I agree also with George about the need for one.

Try making one, it really is not so difficult an the fit does not need
to be absolutely perfect.

Alistair

'82 westy, diesel converted to gas in '94
http://www.members.shaw.ca/albell/