Hi I have just been using the fantastic 377/4 on the Eastcoast Way but noticed two of the door release buttons appear to operate in the incorrect way When pressing the SDO button (top right of panel) all doors release (on that side) and when pressing door release (bottom left) only the doors in the front unit release I don't know if this would be a big task or not but it should be the other way around, as SDO stands for "selective door opening". It really confused me the first few times as I sign 170s (as a guard). The way the panel should work (slightly modified from the 170s panel as there's an extra button on the 377) 1 - Press SDO and door release to open the doors in the front unit only on that side of the train 2 - Press 'all release' and door release to open all doors on that side of the train In both examples both buttons would need to be pressed at the same time as confirmation Personally I'm not sure what the doors open button (top left) does as its not on the 170s, but having a black ring around it would suggest its a button rather than just a light