Quote Originally Posted by NightFlyer View Post
When vacuum should be present at the CPR/WUR: only after a cold start up, and only for the first few minutes of running (until the engine coolant temp reaches 104F).

When vacuum should be present at the electrical distributor's solenoid: only when the engine coolant temp has reached 104F or higher.

When vacuum should be present at the electrical distributor's vacuum chamber: only when the engine temp has reached 104F or higher AND during open throttle events (both condition must be met - if only one is met, then there shouldn't be vacuum here). There should NEVER be vacuum here at idle ever (idle micro-switch engaged/closed).
Despite having read your post at least eight times, I still misread it. I have no vacuum at the distributor advance when cold, but when hot, there is constant vacuum at the distributor advance chamber - at idle and under load. Was unable to confirm vacuum at the CPR / WUR at this time - I think the engine was already warmed up.

Side note: the frequency valve is buzzing away, I believe, as it should. Probably no need to mess with it as I believe my findings were coincidental.