Back again. Many thanks to those who have commented.

Replaced Shut Off Valve in Cali-model 85 300D. Needed replacement (needed tons of vac to work, and was leaking oil into vac system).

Good news is I replaced valve the right way (no runaway).

Bad news is I still have no shutdown. Valve works perfectly (got it to shut down just by sucking on the vac line with my mouth).

Where do I look now? Vac pressure does not need to recharge with driving does it? Did the oil migration foul up the pressure going through the key cylinder?

Annoyed.