Just received my atlas f3b unit. I made a train with my f3a and the first time around the b unit derailed. After inspecting the b unit I discovered that one set of trucks did not have the turning ability of the other truck. What I discovered is the brake cylinder lever hits the ladder. I have started to trim back the lever to allow the unit to run without derailing. My smallest radius is O 63. Has anyone else had similar problems?
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