So here's a tangential question related to this breeder. At zero heat, the classification is a Mark II-1 Breeder EA+ but as the hull heat increases (let's say at the end of 1 cycle) it shifts to being a Mark I Breeder EA+. Why does this happen? As the breeder gets hotter, how can it shift from being a reactor that has to cool at least once per cycle to a reactor that can continuously run as long as certain parts are replaced (in this case, depleted uranium cells go in when the re-enriched cells come out and a new uranium cell in the middle once that's used up).