First of all, I'm really hoping you meant John Scarney, because I've never heard of John Carney before.
Second of all, I thought you did a good job with the handling. It's the first time I've ever seen the effect, and I think you did ok. Some tiny little cleanups may be necessary, but it's hard for me to explain what without exposing.
One thing I really wanted to note was that the little notes that you have in there, like the whole "Oops, let me get the black ones" or "Damn, it happened again," those little statements seem to lose their effect when you put them into text. I think that it would fit spoken patter, but it's just not the same when they're just words on a screen.
-SS