Create a Point Label Style
How to Create a Complex Stacked Civil 3D Point Label Style
Chris Fugitt, Civil 3D Expert Elite and author of the Civil 3D Reminders blog fame, details how to systematically build a workable Point Label Style in Civil 3D.
From the Chris' YouTube Channel.
Here's the Civil 3D Reminders blog link
The order of Label Style component creation is not the only issue. It is important.
Note the way the components are geometrically connected together by the build process in the video. Easy to miss the nuance there.