Parts of the pin that is.

Obviously the playfield and cabinet are made of wood, and wood will expand and contract with humidity.

Starting off with my JP just over two years ago, the ball kept getting stuck in the subway. I thought I fixed it by flattening out the subway, and grinding down a rivet from a previous fix. But now that it's been getting cooler, the ball has gotten stuck in the subway a couple times this year where it was error free during the summer.

Just curious if anyone else experiences game stopping problems likely caused by weather changes. Or if it's all a coincidence that the problem started back up?

In a spare bedroom. I would say heated, but during the winter I like to keep it colder than normal in my house. I'd rather pay a $150 heating bill than a $300 one.

It's also next to a window which is going to be colder than on the other side of the room.

I know that during the fall and springtime, my self-restored factory cart coffee table makes some awfully loud popping sounds for a couple days. Always makes me jump the first couple times it happens.

But with the subway, the only thing I could think of that may be happening is that the playfield shrinks a little, creating a little bowing in the subway.

Nope. Just gets really dry during the winter times. Need to get a humidifier connected to my furnace though. That will help a lot.