Apparently I need a new throttle and according to ENGWE they are not in stock and no longer available! There are plenty generic types available on ebay but how do I know the wiring of the controller as I have no circuit diagram? Would I need to change the controller also and then would it talk to the motor? What a mess! Does anyone have any suggestions? It shouldn't be rocket science as there is just a display, a throttle, a controller, an alarm unit and a motor. There are about four or five little plugs but various colour of wires! Help!