I saw a question about a Fastrack layout getting hot at a track joint. That’s a conductivity issue causing voltage drop, which in turn causes the heat. While not likely to be dangerous, it’s a sign of inefficiency and can lead to other problems, such as the train slowing down at some parts of the layout. Poor conductivity also causes motors to run hotter than they should, which can eventually damage the armature.
I can think of two fixes, none of them especially expensive or time-consuming. And although this question was about Lionel Fastrack, it can happen with other makes of track too, and even other scales.
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