Great feedback. Thanks for the perspectives. Check what I have added below an see if there is something I am missing.
The ZW convention of U on the outside and A D on the middle rail was used everywhere. No diodes just discs. I attached the Block Controls and Layout which is the physical size shown on the attachment. The circles are 15 amp SPST switches to control each of the Blocks. BL 1-4 is on ZW A, BL 5-8 is on ZW D, BL 9-12 is on a 1033. A second 1033 powers all the Turnouts. All transformers have been phased. The outside common is continuous throughout the layout. only the center rail is switched for the Blocks.
The connections used to test reversing the wiring was returned to the initial state.
If the U and A-D are swapped, the outside rail will be hot and the center will be common. Right?
Could the disc be in backward? would that cause this?
