Unrelated to the thread topic, but I didn't want to start another for no reason..
Finally got the chance to play a bit, this is my first time around with Realistic Reactors and also obviously my first time with Atomic Overhaul..
I'm very satisfied with the combination! I absolutely love the new variety even though I'm only currently using graphite reactors at the moment. From a bit of googling, it is hard to think of a way to balance the graphite production since it is seemingly easily obtainable and sustainable IRL.
If you were interested in making future changes to the production cycles, possibly you could look into 'graphitisation'? (I may be misunderstanding, and that may be for an entire different type of carbon ><) and add more time and or a heat requirement to make the conversion from coal to graphite? I'll freely admit I know little on the topic. I thought that graphite was used as a moderator and that the reactors still required uranium, and assumed it would be an ingredient in the fuel cell or reactor to emulate this.
I don't mind the abundance or the way it is now, it is one more thing to do with my coal and my lack of understanding of Realistic Reactors is enough of a balancing factor for now loll :)
Also, I'm excited for the new nuclear waste reprocessing!