KO with Ace Side Count Need Help

I have searched for information in BJ21 on any advantage to adding an ace side count to KO. It seems that some believe there are benefits, some do not. Does anyone know if there are more definitive answers anywhere? Also, what are the mechanics of keeping the ace side count and adjustments to the KO count for the ace side count? I mostly play a DD pitch game. Can anyone lead this horse to water?

Thanks