It used to be a hassle to get stacks rooted and then half the time it didn't run all the mods the way it should. After a lot of research, bad downloads and misleads I finally came across one that works, is automatic and only takes one minute to do! Best of all it is from the pros at xda so you can trust it.
Here is link: http://forum.xda-developers.com/showthread.php?t=1571308&page=103
download falcion's auto rooter and you will be set!
HAVE FUN!