In #8, you had vacuum going to the solenoid when warm, as it should be. If they were backwards, you would not have had vacuum then...
Cold you want:
Vacuum from thermal vacuum control valve to WUR/CPR
No vacuum to solenoid (so, no vacuum to distributor, switch doesn't matter).
Warm you want:
No vacuum from thermal vacuum control valve to WUR/CPR.
Vacuum to solenoid.
No vacuum to the distributor at idle (switch is pressed).
Vacuum to distributor above idle (switch is not pressed).
If you have vacuum to the WUR/CPR when cold, then the thermal vacuum control valve is incorrectly sending vacuum to both...If nothing has changed.
If I'm following you- If they were backwards, swapping the end at the WUR with the end at the center nipple on the solenoid would be a permanent fix.
YW!