still interested in history on this guitar (S-500 s/n G009781)
solved my own pickup problem, though... reversed phase (swapped black and white wires) on the bridge pickup, and physically rotated it back 180deg to normal install position... also added a .001uF cap (across bridge pickup only) as I've seen it appears on the schematic across all pickups on the newer S-500s... this new pickup is not as sweet-sounding as the original rectangular-bobbin pickups, but it's as close a match I will probably be able to find, unless someone has an old pickup lying around they'd want to part with???