The 3 trucker looks great. Are you you using Voltage to trigger the chuff or reed switches? From the video, it looks like voltage. If so, it sounds pretty accurate, if not just a tad fast. You'll find that real shays, unless they are working up a really steep grade, don' make much sound at all, they just whir. But there's nothing we can do about that as modelers. Are you using the SR&RL phoenix sound? It seems to work really well.