I'd send the scene, but I already moved on and didn't save the messed up one.
In case it helps, here are the steps I took, and answers to your questions.
In top view I drew my spline. I made all verts type corner.
In perspective view, I move the segments to the proper Z heights.
Then I create the RC object and pick my spline.
I just chose the default style from the library. (I think it's called wall mounted, in Architecture.)
The result I got is shown in the last picture.
Also, I get an awful lot of brackets in certain areas, and cannot figure out how to control this.