To anyone that has run into this problem I have a solution. This is for everyone that missed the step on keeping your root access. If you have su in xbin and still won't work this will work for you.
(Open terminal emulator) type the following:
/system/xbin/su
Then you should see a #
Run "mount -o rw,remount /dev/block/system /system"
Run "mv /system/bin/su /system/bin/su.bak"
Run "cd /system/xbin/"
Run "cp su ../bin/"
Then you should have your root access again!

and one more thing, don't type the word run or put the " " in this code