True vs Mean Node:
To set which node to use, press the <F3> key. At the bottom right of the Main Chart Options window you will see a "Nodes" group box. Toggle this according to your preference, then click Save or press <Alt + S>.
The True Node oscillates according to the Moons "wobble" caused by the earth/moon gyroscopic action. The Mean Node averages this "wobble" out. The problem is that at any given moment the Moon may be "aiming" at a different part of the ecliptic (where is crosses), but by the time it gets there, the Node position will probably have changed.
