@Bruce Brown posted:
Bruce's Ross w/extensions above... and, Atlas below. Look at your Fastrak... how large is the gap from center rail to frog? Your pickup's may be not be transitioning well while bridging the gap and causing the derailment. You may be able to see/feel this by placing one of the offending Locos on the turnout and pushing it through without power...
Moving the Loco (Legacy GS2) by hand...