I'm trying to recreate an image below in geometry nodes.

[![img1](https://i.stack.imgur.com/rL5dz.png)](https://i.stack.imgur.com/rL5dz.png)

I'm having trouble getting the ends of the spiral curve to be rounded any ideas? See nodes setup below.

[![img2](https://i.stack.imgur.com/nWjQ4.png)](https://i.stack.imgur.com/nWjQ4.png)