I am just trying out the class 66 on SEHS and I have noticed the engine revs up in notch 1 which AFAIK is not supposed to happen as that is the contacts closed but still idle position. However there is no sound at all after notch 2 but a brief bit in notch 5/6, there is also intermittent idle when the train is coasting from the outside. Edit: the main reservoir gauge has also crossed over to the reservoir pipe side
