So, I have some few questions About the whole RJ unmask thing, that, as I barely watched the season 6, I don't have any ideas of the answers, so if someone could help and answer them for me, they are:

1- What Happened to the "Blake Association"?
2- Why did Red John's voice pitch changed so freaking much since that episode 23 of season 2(the one Jane kinda get caught by him) ?
3- How Did McAllister manage to control his fear of height, when he helped Jane?