What a great thread.  I have just learned about the counter-rotating crankshaft from K&B.  I looked it up, and it is still available.  I've been wanting to build a Breezy style project as a camera platform for quite a while now.  The reason I have not is because of the limited selection of left-handed props.  I even have a K&B .61 that has been looking for a home.  New winter project is coming into focus.  You guys are great.