Loren thanks for the sketch. I see what you have done. I use four zone valves so I would need another circulating pump if I was to plumb by your sketch. I am going to add two zones of in floor heat And I am not sure if I would use zone valves or add two additional circulating pumps.
I have a drawing of how I want to plumb and wire the two boilers and only use one pump. Would you be willing to look at that and give suggestions. I need to put together a better explanation of what I am doing.