It’s front end Friday again. Here’s my ancient rebuilt Airfix Midland 4F trundling across cement quay. I bought this engine back in 1982, and in more recent years it’s received a Comet chassis for loco and tender. The original tender drive being replaced. It’s a most incredible runner, with extraordinary pulling power. I put that down to the compensated chassis which means the wheels stick to the track like a limpet.