Open the Inspector in layout mode and select the Position tab. Click the units to the right of the position/size boxes until you get "pixels".
Click the body part label to select it. You'll now see the height of the body part in pixels.
Edit the height shown in the box to reduce its height by 1 pixel.
Thanks so much. I can see how this would work. However, I tried other things since posting my question and came up with a solution on my own:
Each field has a border around it which was evidently causing the problem. It turns out that by eliminating the borders, the Body part can be move up to its proper position. I then reapplied the borders to the fields with the result desired.