Yellow block piers are the same height as the modern piers seen today, but are slightly shorter than the orange piers. Those wedges are called auxiliary blocks.
The D51 is supposed to be smooth but I think there is an irregularity in the friction wheel (not perfectly circle). The clacker is normal, its intended to make a sound when the motor moves.
The D51 is supposed to be smooth but I think there is an irregularity in the friction wheel (not perfectly circle). The clacker is normal, its intended to make a sound when the motor moves.
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