How to join the point attractor?

Hi, I have a question with my algorithm, I don´t know why my point attractor with the index 0 (the pink part) doesn´t join like the other curves when I use the interpolate component , and if there is something I can do to join it.

This is a sketch of what Im trying to achieve

And the grasshopper algorithm
PF (60.6 KB)tr

Also, another question how can I made the curve attractor more dramatic?

I would really appreciate your help!

On the interpolate component, set P (periodic) to true (right click > invert).

Thank you!