Dismantled, cleaned and wire brushed the governor parts. Painted them with red oxide primer. Attempted to remove the governor shaft and weights, but no joy. It is held in place by a taper pin which I cannot get to move. The pins in the governor weights are quite badly worn, and have significant flat spots on them. I need to remove them so I can spin them through 180 degrees  so the good side will act on the pin that pushes the governor rods. I have ordered a set of parallel and taper punches to attempt to drive out the taper pin.