I recently bought the "Racking Secrets" DVD by Joe Tucker, and I absolutely love it. I have learned so much from this video, but I would like to know more information about the back three balls in a 9 ball rack. For instance, does the back ball loose make a difference on where you break? Does the back two balls not touching a corner ball make a difference? If all the balls are tight, except for the back three, does it need to be re-racked? etc. I was also wondering about the one not being frozen to either ball. This seems to be a fairly common problem. Thanks.