As the assumed cause of time dilation, length contraction and attraction we assume gravitational waves move at c.

Hi Jeff. You make a lot of strange comments here. I'll tackle them one at a time. First this one. Why do you phrase this statement like this? What does it all mean?

*What* is the assumed cause of time dilation?

*What* attraction are you referring to?

Therefore these gravitational waves then affect themselves via self-interaction.

Please explain what you mean by "these" gravitational waves affecting themselves by "self-interaction."

*What* self interaction are you referring to?

This would require the field lines to intersect and would indicate an incoherence in the field.

Why?

Since the calculations all refer to the centre of gravity then the density of all field lines at a set radial distance must have a normal distribution.

Why?