John, you are the man! Thanks, I'll let you know as I have an al fresco plenum pull scheduled for this Friday afternoon, no rain. I've done some diagnostics with my hand vacuum pump last night. I have vacuum integrity on the line from the vacuum pump. So the check valve & tank are good to go.
I'm figuring either I have a bad control solenoid, or a hole in one of the actuator diaphrams the size of the grand canyon....or a mouse got in there & chewed on a vacuum line. She is hissing like all get out at idle, and when you try to get in the secondaries it sounds like it's drowning.
Tom