It's been awhile. Here's a post. On my main line 1, my Bachmann 2-8-0's have been derailing. Looking very closely and using an LED flashlight. I saw a track nail stickup a bit. I removed the rail and the locomotives do not derail anymore. I guess you need to watch out for that. This hapend to my N scale layout. I suppose it could happen to any scale.
Andy
Andy