In the Maple Leaf Motoring scenario I have trouble starting the train after coupling the second rake of auto carriers. I can start the train if i go notch 8 and keep sanding, but there is severe wheelslip up until apout 5 mph and even then i cannot get above 6.5 mph even going downhill (and going above 1.1k amps). If I throttle back the train comes to stop without any brake applied. I walked the train and tried releasing all handbrakes (all were released as default), tried to release brakes from both the lead and trailing locomotive through the auto brake handle and brake valve. I am at loss about what to do.