What did you do to your trains today?

Last weekend I did my first successful engine swap on a Trackmaster 2 Diesel. A while back Plarailman UK recommend I order a gear puller and combining that with a set of triangle screwdriver heads (2.3mm fit best but maybe the heads are 2.5mm?) I was able to open him and do the swap. There was some battery leak i cleared with vinegar but the motor didn't look to bad from the outside. Anyway he works now and the new motor seems a good speed