These beasts are getting old now , and quite often in need of service and replacement parts. I am in need of a new switch, the one that goes on the handle, its a ON/OFF/ON switch that centers itself, or momentary as it is called? , having trouble finding the correct size. Also is this switch a ON/OFF/ON or ON/ON/ON switch ?? I can find plenty of the smaller type toggle switches on ebay but just need to know the right one.