...How is your loadweighing ..this equipment used micro switch loadweiging under the platform which was tied into the Generating and compensating fields.depending on what the load was it would insert or take out resistance activated by these micros,relays associated allowed the car to run constant speeds either direction no matter what the load was..provided they were setup properly with the proper weights.alowing the drop and pick of various relays on the board..example LC,Rc,Tc,Hc...