Fingers crossed but Maria's problems seem to be over. I gave the loco some extended running to see if that could solve the problems its developed lately (cutting out and grinding to a halt), 2 hours yesterday and another tonight. It all seems to be OK now, not quite as good as Percy but not bad. Even handled a 2 coach train. Maybe it was just a bit of debris that got in the motor somewhere? Hopefully the problem will not return.