Joe, looks like your using MTH Realtrax. Does your center metal rails have the plastic extensions, like pictured? If they do, your pickup roller is falling off the edge. Make sure your pickup rollers are as close to being centered, between the wheel flanges, as possible. Sometime the roller arms get bent off center when the engine is push down into the Styrofoam packaging. Just carefully push the roller back to center and make sure the roller screw is tight.
