And thanks to everyone else for their nice comments also. The live steam railway seems to keep drawing me back after I've gone off on another tangent as usual. I got in a hurry to set up the camera and make the video so didn't follow my usual procedure of sending a less dear loco around first to make sure the track is clear of obstructions. This almost ended in disaster but I got lucky - won't happen again! Apparently the cord came loose when I was working on the upper layout.