Thanks for the info Grumpy. The motor had been running fine until the governor broke. It was just impossible to use it for mowing as manually adjusting the throttle was just hard work. I adjusted the points using a manual from this site about 6 months ago and it was starting first or second pull.
The cams and internal wear seems good for something as old as it is. It does use some oil, but compression is good.
Thanks very much for alternative parts sources and the helpful advise.
