I made a big boo boo on my N scale layout. My 2-8-0 locomotive was derailing all the time on a curve. It didn't on the other side of the layout. It had the same diameter curve. I picked out all the ballast from the rails. I checked and rechecked. wall1 The 2-8-0 stills derails at that point. So I got out my magnifying glass. I saw the rail joiner was a little high. Since the track was nailed and ballasted into place. I had to use an eye glass screw driver to gently push down on the rail joiner. I had to do it several times. I test ran the 2-8-0. It ran for 45min without derailing!:thumb: What did I learn from this? Not to get into a hurray! Next time I will use a pair of needlenose pliars to crimp the rail joiner into place. I did read this somewhere that's what you should do. However, I've been told by expert models use all flex track when ever possible! Andy In the picture is where I had to fix the rail joiner.