I just finished my air distribution manifold about half an hour ago, and of course, I just had to see if it worked----And it does. I have never had all of my engines running at the same time before, so this was a first. Tomorrow I will hook the double acting wobbler up to the slinky machine, and the twin horizontal engine up to the varying load device, and hope like heck they will all run that way. This week I will have to do some kind of technical write up on each of the various engines to explain to people at the steam show next weekend exactly what it is that they are looking at.