Always Fixing Track?

[Herc Driver]

I agree and have found the very same thing. I've tried to run my "worst" or most problematic diesels over the layout to purposely find the electrical problem areas. I thought my layout was really set to get ballasted and firmly attached, but just yesterday I found that one engine's front two wheels derailed passing over a particular rail joint. Since I knew the wheels were correctly gauged, I worked with the track to make sure the radius was constant and there was no narrowing of the rails. After a while working on it, that engine doesn't derail anymore. My "test" cars have always been the longer AutoRacks paired with a long engine with a short coupler. If they derail, I keep working on the track until the problem is fixed. It also seems to depend on the car/engine maker as well. I never have a problem running Kato passenger cars, but the Concor's will always find a problem spot and derail. It seems like the shorter cars/engines can easily hide a problem spot whereas the longer engines/cars magnify any little problem.