I am a new member and have a question.  I own one of these trolleys.  It has run fine last couple of years, it is only used during the Christmas season with my village.  I set it up this year but it will not run.  When I connect alligator clips from the track directly to the motor it runs fine, but when set on the track it will not move even though the lights come on.  Someone told me I needed to clean the track, I did that yesterday and still no movement.

Any help will be appreciated.