Thank you GGG. I think I am going to follow GunrunnerJohn's advice and do the chain file thing. The headlights and smoke stopped working also. The coupler slack sound goes on repeatedly-something is definitely wrong with it. If the chain files don't fix it, I will take it in to be serviced.
Thank you sir.
My comments above, were intended to be more of a lament at the loss of Barry. I do appreciate your comments about my locomotive, which you and others have kindly assisted me with.
The locomotive does not seem very important right now.