Am I missing something? To upgrade to Anti Seizure it requires the catalyst and the 15-18.
So you get it to 15 which now has a tick and get the catalyst yet you still have to put it through another Agglomerator to get it to 18 according to the tutorial. But why? When the requirement clearly states 15-18. If not, why not just make it 18 and remove the 15 requirement.