Can someone please help me with the four coin roll down? I can't do it all the way yet. I learned it from www.coinvanish.com. Here's the part where I get stuck:

I can't get my fingers to touch like that. Especially the thumb.
Here's my video of me doing it:
http://www.youtube.com/watch?v=P2innh1NPF4
Also here's a video of me doing the coin roll which I've mastered (I like to learn and do all flourishes, I have Devo's ring flourishes DVD, and I'm trying to learn to do the pressure and thumb fan well too)
http://www.youtube.com/watch?v=ASqkrjaPzGo
Thanks for the help!