Quick question about the smoke unit. I got the same engine today and it is really nice. On the bottom of the train is a physical button to turn the smoke unit ON or OFF. In the manual on page 18 it says that if you use the LionChief app on your smart phone you can turn the smoke unit ON or OFF. So if the physical button under the train is set to ON and you go into the LionChief app and turn the smoke unit OFF is it really off or is just the fan off that blows the steam upward? I am asking because the manual says not run the smoke unit without fluid in it. Since the physical smoke unit ON/OFF button is on the bottom of the train I would hate to have to keep picking it up and switching the button back and forth between ON and OFF. If the LionChief app really turns off the entire smoke unit even though the physical button underneath is set to ON that would be a simple way for me to turn the smoke unit ON or OFF without picking up the train.