This is my post from a while back on another account, since then i got in 8 stones a 9/5 stone for another scouter and in 2 stones an 7/7 with for another shadowhunter, use this method please, i never waste pheons with this method.
I feel bad about those that spend so many pheons just because they didn’t found a technique in order to minimize the resource loses, this method i discovered is something that the cm’s of this forums shadow deleted 2 times already, and they will still do so.
This method i discovered after losing 300 pheons in cutting stones, and ever since i discovered it i replicated it multiple times, this method got me 9/6 and 7/7 stone grudge/ adrenaline back to back and 7/7 on my scouter first try, and this is it:
First you must AIM to get 3 nodes in a row for your favourite engraving, after that you will have 45% chance, now the rule is that whenever you have 55% and above chance you will ALWAYS put that node into the first engraving( your favourite one where you got your 3 nodes in a row), and whenever you get 45% and below you ALWAYS put them in RED NODES up till the end, if you are satisfied with the node number on your favourite engraving and then you have 55% or higher you can go for your second one, but always put in red nodes when you have 45% or lower till you finish them.
PS: once after i got my 7/7 first try for my scouter i tried another one for fun, and i got an 9/3 
, but hey i got an 9 right?