Well, I implemented the things specifically to prevent update order from having an effect, my “solution” just is a stupid one that doesn’t work or doesn’t even do anything at all really 
Thankfully this is not really a critical issue with almost no gameplay effect at all (At worst a few seconds less of durability on some fuel rods that get updated too early but no impact to the neutron economy at all).
I’ll quickly fix it, I mean the other stuff in the reactor prevents these kind of issues by doing the neutron stuff on the first call of onServerTickPost() where aFirst is true and doing power stuff on the second call where aFirst is false. I will just update so the moderation values in the second call, which just requires a small new function. Expect a small pull request much later today.