Noticed the Corner3 CPS readings were both railed at -23k -32k and the Near Limit light was illuminated on the CPS Satellite box.  I trace this back to the point in time that the ISI was being locked and the Corner3 Feedthru was being reworked back in early October.  For the vertical sensors, the rail cleared when the exterior copper shield was cleared from the BNC bayonet which is used in the circuitry.  The Horizontal would not yield so easily.  On the vacuum side the Horizontal reading would clear if the cable inside was mucked with but it was not satisfying to this troubleshooter.  It seems this corner of cables need serious reworking.