I play with another AP occasionally that uses an A/9 vs 5/6 deviation where he doubles. I use a level 2 R7 true counted with 23 deviations I adapted from K3 (the count I started with). I asked him what is the index to do that and he said "it's 4 and 5 just like splitting 10's" Can I add these to my own deviations blind, since I already have an index for 10/10? When I run it in a sim it pushes my edge up slightly, but I can't find it in Renzey's book anywhere. I'm wondering if he left it out of his count for a reason, as most every other deviation is there. I haven't used it in real play yet because obviously it's a max bet situation and I'm scuuurred.