When you create a section view Revit examines the scope of the model you have and decides how deep it should "look" based on this size. Often that's TOO big. With the properties palette it's easy to reset this before you actually open the view, or zooming out a lot to drag the grip back.
Just enter a "better" number, then open the view. You'll still have to fuss with the vertical scope, sorry no parameter exposed for that.