All the Elements

On Page One Forty Eight, Sayadaw suggests some concentration on the opposites of the elements if in this meditation they become unbalanced, the opposites are hardness and softness, roughness and smoothness, heaviness and lightness, flowing and cohesion, heat and cold, support and pushing.

Balancing the elements helps with a major goal beyond seeing and knowing the elements, which is to attain better concentration.
Following their being quite balanced, the yogi should see the elements in the body by 'group at a glance', and finally as a whole, possibly from the vantage point of looking down on the whole body at once.