Thank You for scene file. You have found a bug
You copied some nodes within macro which does not play well in master style. Notified developers team. Thank You.
I modified scene to use correct numerical nodes.
Regarding running bond, I analyzed a bit more how this macro should work, and reverted to mostly default settings just added bricks alignment to center. It turned nice on corners then. And there is "Offset Y" parameter to compensate the shift. That it, if You have any more questions, please ask.
Attached scene with all modifications.
I am glad you are using RailClone this heavily and would like to see a final render of this project