How did you get the intersection line's director vector to be such a nice one if in the definition of the two planes you have 6 (!!) parameters??

The director vector of the line is a normal to both plane's normals, and then you only need one single point belonging to both planes to form the parametric euqation of the intersection line. I can't understand what you did above...in fact, I hardly understand your planes' equations.

Tonio