Current state: ISI is locked down on stops; the platform is NOT balanced, Corner3 CPS Feedthru is held by just a bolt or two, there appears to be a short to ground on the V3 CPS cable.

Again w/ much help from Corey, we determined that the Corner3 CPS H & Vertical connections in chamber were swapped.  Similar to the swapped Coil Driver cables which made damping impossible, the swapped CPS cables made isolating problematic.  The swapped CPS cables of course made balancing the table sort of confusing but pretty clearly explains the big 'horizontal' shift we were seeing when the platform was locked:  What we thought was balanced was anything but what we thought and locking the locker was just pulling the vertical back into a reasonable place.

The excessive noise seen on H3 led us to breaking the seal on the feedthru and during this process, the V3 signal went to the negative rail which implies a short to ground of at least the sensor shield and/or maybe, the sensor core to its shield.  We pulled the copper braided shield back as far as we could but could find not even a subtle break in the insulation exposing internal shield to the grounded copper braid.  While manipulating the cable looking for the short, there would occasionally be a reasonable signal but we were unable to isolate a definitive bad spot.  We must continue this as balancing is not possible until we have the three vertical CPS signals.

In the morning we'll move the cabling to a better place for working and looking for the short.