What do they mean by too hot ? people often shit themselves when they fit temp gauges to these motors and see the temps.... its common to be up around 120-130 degrees C....dependant on so many things...
road temp
cooling tin (shiny will run hotter) stock heavy tin in black will be cooler
Oil your running
hot to cold area seals leaking (replace)
timing
carb set up
thermostat
blocked /restricted oil galleys are common with high milage blocks (flush the block out either chem flush, compressed air or jet washer(just flush it with oil afterwards))
and of course driving style
amongst others