Hi. I got a Lionel 2035 http://www.the-gauge.com/gallery/showimage.php?i=1954 And its FAST. and it only goes in reverse. It struggles, buzzes, and goes forward haltingly, and then i change direction and it goes like blazes in reverse. What to do? I have read that this is a highly desirable engine... it being one of the few postwar steam engines with Magnetraction... ?