Sometimes hasty touch will fail enough times that the final shot with byregot's blessing isn't enough. I'd say you probably want at least 7 stacks of inner quiet.

If you are getting that many stacks of inner quiet and still not getting it high enough, there might be something else wrong. How is your gear? Your gear should be fairly updated, no more than a few levels below where you are. What level is the recipe, and what level are you? It is best if the recipe isn't any more than 1 level above your own.