My father-in-law has a Lionel layout and is having problems getting his new infrared controller to work. It's the 153 IR Controller. He's using standard DC power and connecting it to a grade crossing arm. Breaking the infrared beam does not trigger the device. Since I model in N and the Lionel 3 rail track scares me a bit, I'm not sure what advice to give him. Any suggestions would be appreciated. Thanks.