Resizing ScrollRects

I am having a helluva time trying to get a vertical scroll list of one column of items to work. At all.

I have a setup something like this, child of a root Canvas, Canvas Renderer, etc:

Dialogue (Canvas Renderer, Image)
- Scroll Rect (Scroll Rect, Mask, Image)
- - Scroll List (the ScrollRect's Content)
- - - List Item
- - - - Date (Text)
- - - - Title (Text)
- - - - Image (Image)
- - - - Body (Text)

This is for a MOTD popup so the body text can vary (short to quite long).

Ideally, the...

Resizing ScrollRects