hi, im new here, and i got a lionel 1666 steam engine and the front light keeps going out on me and i can't figure out why? this is what i tried... 1. i cleaned the track 2 times, no difference 2. cleaned the wheels, no difference 3. checked all the track with an ohm reader for a short in the track and none found. 4. cleaned both contacts to rails under engine, no difference So what happens is when the train goes forward the light comes on, then 1 , 2 times around the track and the light goes out, 2 more times around the track light comes back on, then goes out, then comes back on...but every time i have to stop the train all the way, put in neutral, then the light comes back on and it goes 1 or 2 times around before the light goes out. any help whats wrong would be helpful. thanks.