Extension of Interesting Question I raised about 'Momentum' K of a   Geodestic g at the J.A. Wheeler Astro physics School with possible numerical   modeling of Deformations of Light Cones
  I present the background of a question I asked Richard Matzner at the John Wheeler astrophysics school in Erice, at the Majorana institute of scientific culture during May 31st -June 8th. with an extension of the question to the issue of possible light cone deformation. This possibly has relevance to the stability of numerical algorithms used in modeling gravitational waves from Schwartzshield metric solutions of black holes and similar objects. This involves the so called momentum K of a geodestic g, with its re casting in a Kerr shield co ordinates of the Schwartzshield metric. for two black holes which have anti parallel spins but which exhibit spin coupling between them. 
A.W.Beckwith