I agree. The PRR had restrictions on its tight curves in the Middle Division near Iron Furnace and Spruce Creek. So make up a rule for your operating sesion.
I had a problem with a PFM PRR 2-10-0 with blind drivers. It took a very close look at the drivers to find the problem. It went around a 24" radius curve and derailed. The cause was a road crossing the track at grade. The tiny wood strips next to the rail were a tiny fraction higher than the...