Comparing UAPC indices from Ustons MD Blackjack book and pg. 259 of Wongs Professional BJ a question arises. Wongs tables are for 4D I realize but we see a pretty close correlation of indices across most of the left side i.e. 12-16 v 2-6 and a lot of the right half except 15/16 v 7 and 8. Wongs says keep hitting that 16 v A until you get to 3, Uston says wait til 10 to depart from the BS hit. Its 5 and 12 for the 15 respectively. I like to dig deep, just like some of the people I admire so much in this forum, so please help sate my curiosity. I know the systems are different but I have the feeling I am missing something.