After I figured out how to get the brakes and hangers installed, I then began work on the link supports.  This took a lot of measuring and fine tuning to make sure all the dimensions were correct.  This piece holds together the swing link, crosshead slide and the front brake hangers.  I was thinking about having these parts cast, but decided to give it a go by machining the thing.   Here they are under construction ....

and mounted on the engine with the crosshead slide bars.. 

Just needs some final filing and a coat of paint.  I'll do that after I start work on the valve gear.