I know there is already another tread on this subject as I've posted a response there. However, in reading the thread no one has said wether or not they also hear the ticking sound when using their activated track key. As I haven't activated mine yet I have no way of checking to see if the ticking sound is still there. Maybe those of you who have a active track key and have heard their engines ticking can tell me if the ticking sound happens with both keys, or "tunes" as it were ??