Michael,

Been playing with the flow command..twist very cool btw...and have been ending up with the surface tearing apart on the end which you can see in the screenshots. Only way it doesn't tear if I set it to rigid which kinda defeats flow on curve. Wondering if this is a bug or am I doing something wrong. I attached the file for you to look at. I had the twisted rope all closed at first - meaning ends capped and bottom closed..same thing - tears..I deleted the caps and bottom and same result.

Thanks for your help