The test showing max 12 in. vacuum available to booster was with consumers plugged off and also plugged in as normal. No difference, they are not getting any vacuum to speak of.

I need to replace the vacuum check valve / tube since its delivering only half the vacuum to the booster and 1 in. to 7 in. Hg to consumers. I'll need competent vacuum to repair those functions and they could work fine now .... wirh sufficient vacuum.

If brake pedal chachteristics improve maybe I'm done

Now there is 2 in, of pedal motion before braking begins. Its like I need an adjustable booster rod to erase 1.5 of the 2 in of ineffective pedal motion. FSM says have booster rod press on MC piston causing .2 to 1.2 mm depression of MC piston at rest.

Braking power assist drops off fast when you pump the pedal a few times.

Need a witch doctor.