Slinky Toy

[dj_robot]

Hi. Thanks to everybody. I started working on a Slinky toy based on this tutorial:

http://area.autodesk.com/blogs/duncan/its\_slinky\_its\_slinky

And it works fine, but I need to have some control over it and I made a simple rig to have total control of it's movement. Is a tube that works as a collider that gives the cloth spiral a guide to move.

I've been working on this for a while now and  I can't figure out why the mesh collapses over itself when the coils start to reach the end of the arching path.

Here's the link to a video of my problem.

Thanks. All help will be appreciated.