I thought the encounter slot still had to match?Yea I guess that math is right. You can check if the target you are going for repeats. If it does, go for the lowest one it does, (ex. 894, 896, 898). Target 894 with 2 patches showing up. If 3 really came up, it would go to frame 896, which is still good, and with 4 patches it goes to 898, which still works. So pretty much find one that works 3 in a row like this and use the lowest for the target frame and do the math for 2 patches showing up.
And I tried it and it didn't work. Instead of Adamant 31/31/31/x/31/31 I got Calm 1/11/19/9/28/11. Which has frames 845, 851, 879, 909, 927, and higher ones. Not sure which one I actually hit..