You live and learn matey. There were 3 kits going to that one stat. Would have been quite fine to have two stats running two kits each and split the floor up more evenly as if it were separate rooms. Thinking back now, they had a fire in one room and I think we stuck the stat in the other to sort of have it control the heating in that area. Though that would cause the warmer side to heat up when the fire was on, when it wouldn't need to.
Oh well.
Oh well.