Just received a new FA-1 set with True Blast sounds, horn and bell. I run old Lionel equipment, still like my o27 track and a ZW transformer. The ZW only has a whistle switch, sometimes it make the horn go off, sometimes it make sthe bell work. Any ideas as to what I need to do or get to get the sounds when I want them? I'm new at this multiple sound stuff so pardon me if this is a stupid question.