To the 805-806 fans,
You are in luck - the Rider manual here:
http://www.earlytelevision.org/image...-rider-tv3.pdf
is essentially the same as my GE document - with only minor changes in formatting and the removal of the very basic 'Picture Defects' section that essentially is unkeyed to any component defects or specific circuits, just a very general 'adjust vertical linearity' type of recommendation.