There you go - you learn something every day. Proven wrong once again
You wouldn't happen to know if the same applied to the 1981 YZ 60 would you ??. I thought the 3R was for the G model, but maybe it was for the 1981 50 as well. Clymer only show one model (the 60), but tehre seems to be a 50 as well.
Thanks for the reply mate. Anyone any ideas ??