Dan - thanks. I'm going to keep the common ground. It's a good idea. Yep the red boxes are the switch machines.
Carl - I was wondering. I had the diagram you gave the link for plus the diagram I got from somewhere. I will try reversing the L diodes before I go into the shop today.
I am also using 3" track on the inside straight portions but opted for making the curved transition track on the two outside portions of the 4-way due to lack of space. On all other Ross turnouts I am using the 3" track. It is so much easier to use plastic pins on the ends of the 3" then cutting into rails and filling with silicone.
Joe
