Mounting the tracks
The most difficult part of the base assembly is getting the tracks onto the bogie wheels. First, you must assemble the tracks into continuous loops. The tracks are composed of a bunch of small plastic tread units that are connected to each other with small metal pins. If you look at your tracks, one end will have a pin, and the other will not. You have to remove the pin by pulling or pushing it out using a thumbtack (which was helpfully provided in the kit). You want to push the pin away from the side with the small cylinders – it needs to come out the other side. You can see this in the following image. Pull the pin out far enough to engage the two ends of the track, and carefully push it back in to connect the track. ...
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