I didn't do well enough. Also, I can't lean reach like I did when I was a kid in my 60s. It's interesting when you have identical switches, with some having the issue and others not. Hard to pinpoint the exact cause. Especially occurs when backing a long train through the curved section of an O72 switch. If I could eyeball the switch up close, I'd see the spark marks on the center rails and touch them with liquid insulator. But that's another topic
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