This is across the bay from me up in Alaska in the native corps main building. I was able to change it out this year to a burnham mpo. Definitely a better setup now, along with fuel savings.
They would do all of their own work as it was absolutely necessary, except for the one time when they allowed me to at least re-do the supply side of the manifold and replace the zone valves.
I was able to re-do all of the return side when I replaced the boiler.