Just started with an install for G-Scale model.  Have all the details for a simple track set-up. Elavated track in a 10' x 12' room.  Train is running ok but I need help with cornering radius because am causing one car to derail on the front set of wheels.
Also need some advice & help to activate the whistle and bell.  There are two contacts extending downward from the center of the engine. These must  activate
the bell and whistle but need help on particulars.  Thanks in advance.