That siding looks great, and I really like your rails. That's the worst part of milling; getting it all setup. I have some apple in backyard I need to mill, and I need to do something with the rest of the ash at work(I think I've decided on 2" slabs to make stock for tool handles). I have a hard time getting motivated because of the setup, and since I don't have any particular need, I don't get to it.
That's an interesting chain. I guess I'm seeing it in an unfinished state, and you reduce the top plates by 75%? Is that to reduce drag?