Guess it's just me but there are a couple of spots where you can mess this trick up and I really
can't comment on why they're difficult for me without giving away the trick. The method of the trick
is good but there's just too much concentration needed to do it accurately and consistently. For me
to do the trick I just can't do it quickly without error. Hats off to the other 99% who seem to be
able to do it flawlessly and with confidence everytime.